| 单词 | stoma |
| 例句 | The operation was a success but her recovery was a slow and painful one – Ward now has to cope with a stoma, which she describes as "horrible". Karin Ward: 'I'm not angry at Jimmy Savile now' 2012-12-09T00:04:01Z Unlike flowering plants, mosses do not use stomata for CO2 entry and therefore may have less access to the available CO2. Research provides crucial insights into moss growth under elevated CO2 levels that may benefit climate change models 2023-11-14T05:00:00Z This means they are able to start going to the toilet again much sooner, rather than having to empty their stoma bags. Bowel cancer patients allowed home on same day as stoma surgery 2023-11-08T05:00:00Z A runner with a stoma who had to pull out of the New York City Marathon is hoping to compete in another race in the United States. Chicago Marathon: Stoma runner's hopes after New York snub 2023-11-07T05:00:00Z The organisers sent her a type of clear ruck sack for carrying water, but she said it would not work because it had no room to carry stoma supplies. New York City Marathon: Runner with stoma forced to withdraw from race 2023-11-04T04:00:00Z "One day it just came to a head. I had to take her to the hospital, they bypassed her bowel, she had a stoma fitted and that was it," he said. Bristol dad’s music helped him after losing wife and daughter 2023-10-07T04:00:00Z A woman has become the first person with a stoma to swim solo across the English Channel. Alnwick woman becomes first solo English Channel stoma swimmer 2023-09-12T04:00:00Z Several weeks later they would need an ileostomy closure, which is surgery to reverse a stoma bag and restore the normal passage of stool from the small bowel to the rectum. Bowel cancer patients allowed home on same day as stoma surgery 2023-11-08T05:00:00Z After competing in numerous events over the past decade, Gayle said it was time organisers were more accommodating, particularly as "everybody's stoma is totally different". Chicago Marathon: Stoma runner's hopes after New York snub 2023-11-07T05:00:00Z A stoma connects to the digestive or urinary system and allows waste to be diverted from the body and into a bag. New York City Marathon: Runner with stoma forced to withdraw from race 2023-11-04T04:00:00Z But when the air and soil are so dry that they can’t meet demand, a tree will eventually close the stomata, or pores, on its leaves to avoid losing precious water. Tropical forests may be warming to a point where plant photosynthesis fails, study warns 2023-08-26T04:00:00Z Mrs Castle, from Alnwick, said she took on the swim to "prove you can do anything with a stoma". Alnwick woman becomes first solo English Channel stoma swimmer 2023-09-12T04:00:00Z The surgery is usually done through the stoma, but sometimes an additional incision is needed. Bowel cancer patients allowed home on same day as stoma surgery 2023-11-08T05:00:00Z But organisers of the Chicago Marathon have said her stoma and water supplies were allowed if she secured a place. Chicago Marathon: Stoma runner's hopes after New York snub 2023-11-07T05:00:00Z Now she is hoping to become the first person with a stoma to swim solo across the English Channel. Alnwick mum aims to be first English Channel stoma swimmer 2023-08-14T04:00:00Z Mr Sweetlove has had eight months of chemotherapy and is poised to have an operation to reverse his stoma. Bedfordshire man who ignored home cancer test gets bowel cancer 2023-07-20T04:00:00Z In that same year, Mrs Castle read an article by a triathlete with a stoma and had a "lightbulb moment" when she realised the woman's colostomy was still enabling her to live an active life. Alnwick woman becomes first solo English Channel stoma swimmer 2023-09-12T04:00:00Z Mr Upshall had been unable to go to the toilet normally for several months - relying instead on a stoma bag while his bowel healed. Bowel cancer patients allowed home on same day as stoma surgery 2023-11-08T05:00:00Z Anna said being "shut away" to deal with a new stoma at the start of the pandemic left her feeling "traumatised". Hidden disabilities: ‘Social media has given me a voice' 2023-06-25T04:00:00Z Two weeks after the birth, she left hospital with a baby boy and a stoma, a hole in her abdomen through which her bowel had been diverted to a bag to catch the waste. Alnwick mum aims to be first English Channel stoma swimmer 2023-08-14T04:00:00Z The 44-year-old has regularly used her social media to talk about her treatment and her stoma - which she has named Audrey. BBC Radio 1: Adele Roberts to leave station after eight years 2023-06-21T04:00:00Z Among her various challenges, she started taking a dip at her local beach wearing nothing but a bikini every day throughout winter in 2020 to break down stigmas around wearing a stoma bag. Alnwick woman becomes first solo English Channel stoma swimmer 2023-09-12T04:00:00Z Patients in Somerset are the first in England to be allowed to go home on the same day as having major surgery to remove a stoma bag. Bowel cancer patients allowed home on same day as stoma surgery 2023-11-08T05:00:00Z Keith said it was a "dark time" and having his stoma fitted felt like being "born again". Hidden disabilities: ‘Social media has given me a voice' 2023-06-25T04:00:00Z "The stoma bag leaked all the time, I couldn't sit down for about six months, I had countless infections and was in and out of hospital," she says. Alnwick mum aims to be first English Channel stoma swimmer 2023-08-14T04:00:00Z In the left image, the stoma is open and round. Fundamentals of Biology 2015-01-01T00:00:00Z She then changed her mind and took on the challenge, "because it would be a fantastic way to raise awareness of women injured in childbirth and that you can do anything with a stoma". Alnwick woman becomes first solo English Channel stoma swimmer 2023-09-12T04:00:00Z Patients like him would normally have a stoma bag fitted as a temporary measure. Bowel cancer patients allowed home on same day as stoma surgery 2023-11-08T05:00:00Z In addition, this adaptation has allowed plants to carry out low levels of photosynthesis without opening stomata at all, an extreme mechanism to face extremely dry periods. Concepts of Biology 2013-04-25T00:00:00Z Of those, it is estimated about 16,000 will suffer third or fourth degree tears which can lead to lifelong incontinence, pain and, in rare cases like Gill's, a stoma. Alnwick mum aims to be first English Channel stoma swimmer 2023-08-14T04:00:00Z A blowup of a leaf shows that transpiration draws water from the leaf through the stoma. Fundamentals of Biology 2015-01-01T00:00:00Z Roberts, who has lived with a stoma for 18 months, has set herself the challenge of becoming the fastest woman with an ileostomy, by completing the distance in under four hours. Everything you need to know about this year's London Marathon 2023-04-21T04:00:00Z Roberts, 44, has lived with a stoma for the past 18 months following surgery and will attempt to complete the distance in under four hours and become the fastest female with an ileostomy. 'A second chance at life' - Radio 1's Roberts eyes world record after cancer 2023-04-19T04:00:00Z The gas exchange of carbon dioxide and oxygen occurs through small, regulated openings called stomata. Concepts of Biology 2013-04-25T00:00:00Z Because she's the first person in the world to swim with a stoma she has no idea what is going to happen and whether the swim might cause it to become infected. Alnwick mum aims to be first English Channel stoma swimmer 2023-08-14T04:00:00Z For example, stomata are present on the stems of the sporophyte, and a primitive vascular system runs up the sporophyte’s stalk. Fundamentals of Biology 2015-01-01T00:00:00Z Having a stoma bag means sometimes tablets don't absorb, they literally come straight back out. My Money: 'I have 25p left in my bank account' 2023-02-21T05:00:00Z She has named her stoma - which is an opening in the abdomen allowing waste to be diverted out of the body and into a bag - Audrey. 'A second chance at life' - Radio 1's Roberts eyes world record after cancer 2023-04-19T04:00:00Z In one form, a more efficient use of CO2 allows plants to photosynthesize even when CO2 is in short supply, as when the stomata are closed on hot days. Concepts of Biology 2013-04-25T00:00:00Z She had to advocate for herself, googling treatments while exhausted from chemotherapy and dealing with a stoma bag. ‘I went through the menopause before my mum did’ 2022-12-27T05:00:00Z In the right image, the stoma is closed and oval shaped. Fundamentals of Biology 2015-01-01T00:00:00Z These include sanitary pads, sports drinks and clothes that fit over a stoma bag. My Money: 'I have 25p left in my bank account' 2023-02-21T05:00:00Z "I've been living with a stoma for 18 months and it saved my life. It's giving me my life back." 'A second chance at life' - Radio 1's Roberts eyes world record after cancer 2023-04-19T04:00:00Z The other adaptation performs preliminary reactions of the Calvin cycle at night, because opening the stomata at this time conserves water due to cooler temperatures. Concepts of Biology 2013-04-25T00:00:00Z Two cells, known as guard cells, surround each leaf stoma, controlling its opening and closing and thus regulating the uptake of carbon dioxide and the release of oxygen and water vapor. Biology for AP Courses 2022-06-09T00:00:00Z As the openings for gas exchange, stomata help maintain a healthy water balance; a potassium ion pump supports this process. Fundamentals of Biology 2015-01-01T00:00:00Z The air spaces in mesophyll layers connect to the plant’s exterior through stomata, or small openings in the epidermis allowing carbon dioxide, water, and oxygen to diffuse into and out of leaves. Miller & Levine Biology 2018-01-01T00:00:00Z She had two sections of her bowel removed, a stent in her bladder, was fitted with a stoma and was given a hysterectomy, ending her plans to have children. Bowel cancer: Call to lower screening age in Wales sooner 2022-07-08T04:00:00Z Water enters the vascular system of the plant through the roots and evaporates, or transpires, through the stomata of the leaves. Concepts of Biology 2013-04-25T00:00:00Z The role of stomata, guard cells, and trichomes in transpiration are explored in the Transport of Water and Solutes in Plants module. Biology for AP Courses 2022-06-09T00:00:00Z Their stomata only open at night, when humidity tends to be higher and temperatures are cooler, both factors that reduce water loss from leaves. Fundamentals of Biology 2015-01-01T00:00:00Z Plant leaves allow for gas exchange by opening stomata. Miller & Levine Biology 2018-01-01T00:00:00Z Bethany Jacobs has Crohn's disease and lives with a permanent stoma bag. What's it like living with an invisible disability? 2022-06-28T04:00:00Z Ms Roberts has been through intense treatment and now wears a stoma bag. LGBT awards: Adele Roberts named role model of the year 2022-06-24T04:00:00Z Other responses under the control of phototropins are leaf opening and closing, chloroplast movement, and the opening of stomata. Biology for AP Courses 2022-06-09T00:00:00Z However, these are not stomata, because they do not actively open and close. Fundamentals of Biology 2015-01-01T00:00:00Z Plants maintain homeostasis by keeping their stomata open enough to allow photosynthesis to occur, but not so much that they lose excessive water. Miller & Levine Biology 2018-01-01T00:00:00Z Exposing leaves to moisture has costs: even a thin film of water can block the flow of carbon dioxide into leaf openings called stomata, hindering photosynthesis. Redwoods Grow Weird Leaves to Suck Water from Air 2022-06-17T04:00:00Z In May, Ms Roberts and her stoma - which she has named Audrey - featured on the front cover of Women's Health magazine, as a way to break down the stigma surrounding her diagnosis. LGBT awards: Adele Roberts named role model of the year 2022-06-24T04:00:00Z Low soil moisture causes an increase in ABA, which causes stomata to close, reducing water loss in winter buds. Biology for AP Courses 2022-06-09T00:00:00Z At night, CAM plants open their stomata, allowing CO2 to diffuse into the leaves. Fundamentals of Biology 2015-01-01T00:00:00Z When water is abundant, it flows into the leaf, raising water pressure in guard cells and opening stomata. Miller & Levine Biology 2018-01-01T00:00:00Z Meanwhile peripheral leaves power photosynthesis with dense stomata and waxy, water-repellent coatings. Redwoods Grow Weird Leaves to Suck Water from Air 2022-06-17T04:00:00Z She’s been through intense treatment, and now wears a stoma bag as her bowel recovers. Radio 1's Adele Roberts reveals life with a stoma 2022-05-26T04:00:00Z How will the stomata respond to the change in weather? Biology for AP Courses 2022-06-09T00:00:00Z To overcome this, stomata or pores that open and close to regulate traffic of gases and water vapor appeared in plants as they moved away from moist environments into drier habitats. Fundamentals of Biology 2015-01-01T00:00:00Z When water is scarce, water pressure in guard cells decreases and stomata close, reducing water loss by limiting transpiration. Miller & Levine Biology 2018-01-01T00:00:00Z And has also has a contract with a UK-based firm to use his company's soluble wipe technology for the international stoma care market. Cancer screening led me to invent dissolving wet wipes 2022-05-22T04:00:00Z This month, Adele - and her stoma - are on the front cover of "Women's Health", as she continues to break down the stigma surrounding her diagnosis. Radio 1's Adele Roberts reveals life with a stoma 2022-05-26T04:00:00Z Under drought conditions, the stomata open its pores wider in order to perform a better rate of transpiration. Biology for AP Courses 2022-06-09T00:00:00Z In the daylight, the CAM plants do not open their stomata, but they can still photosynthesis. Fundamentals of Biology 2015-01-01T00:00:00Z Carbon dioxide that has entered the leaves through the stomata is used in the Calvin cycle to produce higher energy sugars. Miller & Levine Biology 2018-01-01T00:00:00Z Instead, she says, the extra atmospheric CO2 allows trees to reduce water loss, because they don’t need to open their stomata so wide to take in CO2. Climate change could expand forests. But will they cool the planet? 2022-05-19T04:00:00Z She now lives with a stoma but is cancer free and hopes this easier testing could diagnose bowel cancers earlier than hers - and save thousands of lives. Bowel cancer: Finger-prick blood test developed 2022-05-18T04:00:00Z Most of this water is lost from stomata. Biology for AP Courses 2022-06-09T00:00:00Z Carbon dioxide diffuses into leaves in the night when the stomata are open and is fixed into oxaloacetate by PEP carboxylase which attaches the carbon dioxide to the three-carbon molecule PEP. Fundamentals of Biology 2015-01-01T00:00:00Z Plants have openings on the underside of their leaves that are called stomata. Miller & Levine Biology 2018-01-01T00:00:00Z About one in every 500 people in the UK have a stoma bag but many of us have never seen one because they are often hidden away. Ulcerative colitis: 'I was going to the toilet up to 30 times a day' 2022-04-18T04:00:00Z She had to have her spleen removed, and also had a stoma. Emma Wolfenden: 'Obsessed' man jailed for woman's attempted murder 2022-02-02T05:00:00Z To survive, they need prop roots, reduced foliage and fleshy leaves with sunken stomata to reduce transpiration. Biology for AP Courses 2022-06-09T00:00:00Z "He has a stoma bag, they didn't know anything about stoma bags or what to do." Bristol patient in hotel left for week without nurse 2022-01-24T05:00:00Z Dry conditions force plants to close their stomata in order to conserve water. Miller & Levine Biology 2018-01-01T00:00:00Z She believes the benefits of having the stoma bag far outweigh any negatives. Ulcerative colitis: 'I was going to the toilet up to 30 times a day' 2022-04-18T04:00:00Z The spruce draws in carbon dioxide through the tiny holes in its leaves, known as stomata, and water through its roots. This tree has stood here for 500 years. Will it be sold for $17,500? To survive, they need deep roots, reduced foliage and fleshy leaves with sunken stomata to reduce transpiration. Biology for AP Courses 2022-06-09T00:00:00Z "It could have been much worse - there's no permanent damage. We were looking at the possibility of her needing to have a stoma." Warning after Lewes girl, 6, has surgery for swallowing magnets 2021-09-24T04:00:00Z One was to have a stoma created - an opening in the abdomen that allows waste out of the body - or try a stem cell therapy trial which would involve aggressive chemotherapy. ‘I’ve been in self-isolation for three years’ 2021-08-26T04:00:00Z Doctors said she needed to consider having stoma surgery because various drugs were not getting her condition under control. Ulcerative colitis: 'I was going to the toilet up to 30 times a day' 2022-04-18T04:00:00Z Gill Castle is on a mission to break down fear and stigma around swimming with a stoma bag. Swimming with my stoma bag 2021-04-30T04:00:00Z To survive, they need deep roots, reduced foliage and fleshy leaves with sunken stomata to reduce transpiration. Biology for AP Courses 2022-06-09T00:00:00Z To limit infection, plants close stomata on recognizing such an attack, in a defence response called stomatal immunity2. Calcium channel in plants helps shut the door on intruders 2020-09-06T04:00:00Z The researchers also analysed the geometry of the leaves' stomata and other anatomical features, and compared them with those of modern leaves. 'Mummified' plants give glimpse of Earth's future 2020-08-20T04:00:00Z Summer tearfully accepted she needed to have the operation, but was terrified about living with a stoma bag. Ulcerative colitis: 'I was going to the toilet up to 30 times a day' 2022-04-18T04:00:00Z His story caused an outpouring of shock amongst the stoma community and prompted the question - is there enough mental health support for those facing surgery? "If it wasn't for my bag, I would not be here today" 2020-06-20T04:00:00Z To survive, they need deep roots, increased foliage, and fleshy leaves with sunken stomata to reduce transpiration. Biology for AP Courses 2022-06-09T00:00:00Z Furthermore, the authors’ observation that the gene that encodes OSCA1.3 is specifically expressed in stomata is consistent with a role for the channel in stomatal immunity. Calcium channel in plants helps shut the door on intruders 2020-09-06T04:00:00Z A stoma is an abdominal opening to allow faeces or urine to be collected. Life-support man who refused stoma allowed to die 2020-06-10T04:00:00Z Summer decided to follow her friend's path in creating her own Instagram page to chronicle her life with a stoma bag. Ulcerative colitis: 'I was going to the toilet up to 30 times a day' 2022-04-18T04:00:00Z He agrees mental health support for those facing stoma surgery is "relatively poorly dealt with, in the sense that there isn't enough resource for it". "If it wasn't for my bag, I would not be here today" 2020-06-20T04:00:00Z Predict the effect of closed stomata on the synthesis of G3PA and justify the prediction. Biology for AP Courses 2022-06-09T00:00:00Z It shuts its stomata in defense, but then it can’t make food from carbon dioxide in the atmosphere, through photosynthesis. Death of the giants: Forests getting shorter, younger, in Northwest and elsewhere 2020-06-05T04:00:00Z A judge is considering whether a man with a history of bowel problems should be allowed to die because he does not want to live with a stoma. Court rules on stoma patient's right to die 2020-06-02T04:00:00Z Both women get questions from young people who have just been diagnosed and others about to go through stoma surgery. Ulcerative colitis: 'I was going to the toilet up to 30 times a day' 2022-04-18T04:00:00Z When I was told I needed a stoma I was very, very poorly and weighed about five stone. "If it wasn't for my bag, I would not be here today" 2020-06-20T04:00:00Z The opening and closing of stomata are controlled by specialized guard cells that surround the stomatal pore. Biology for AP Courses 2022-06-09T00:00:00Z Water moves up these cells both because of the sticky property of water molecules, and the pull of evaporation to the atmosphere, through tiny pores on the bottoms of leaves, called stomata. Death of the giants: Forests getting shorter, younger, in Northwest and elsewhere 2020-06-05T04:00:00Z A stoma is an opening in the abdomen and a bag is attached to collect faeces or urine. Court rules on stoma patient's right to die 2020-06-02T04:00:00Z Teen's posts show stoma bag 'not end of the world' Ulcerative colitis: 'I was going to the toilet up to 30 times a day' 2022-04-18T04:00:00Z When she became pregnant, despite a few fears she says "as my belly grew, my stoma grew with it". "If it wasn't for my bag, I would not be here today" 2020-06-20T04:00:00Z The osmotic state within the guard cells determines their turgor; when the guard cells are flaccid, stomata close. Biology for AP Courses 2022-06-09T00:00:00Z For now, recent studies suggest that the stomata effect tends to win. Because of Rising CO 2 , Trees Might Be Warming the Arctic 2020-05-24T04:00:00Z The patient would need a permanent stoma to survive. Court rules on stoma patient's right to die 2020-06-02T04:00:00Z He states that the Colocasia is destitute of the stomata with which the leaves of plants are generally provided, especially on their under-surface, and attributes the phenomenon to the incessant pulsations of the imprisoned sap. From the archive 2019-12-02T05:00:00Z "My stoma, my bowels and my body adapted to a new way of life," she says. "If it wasn't for my bag, I would not be here today" 2020-06-20T04:00:00Z Intracellular carbon dioxide concentration and light can trigger stomata to open. Biology for AP Courses 2022-06-09T00:00:00Z Surgeons then removed “bundles of Ascaris lumbricoides worms” manually and “by milking through the stoma.” GRAPHIC IMAGES: Boy, 4, has dozens of worms removed from intestines after complaints of pain, vomiting 2019-06-10T04:00:00Z A stoma is an opening in the stomach where faeces are collected in a bag after part or all of the bowel is removed due to a disease or obstruction. House-share struggles with a stoma 2019-04-16T04:00:00Z But at night it is too cold for this, while opening their stomata in the glare of the sun would cause them to shrivel. In the land of El Dorado, clean water has become ‘blue gold’ 2019-04-09T04:00:00Z Instead, what really connects is to show them that many stabbing victims end up with a colostomy or "stoma" bag. Surgeons who want you to touch knife crime 2019-03-25T04:00:00Z Two guard cells surround each stoma, regulating its opening and closing. Biology for AP Courses 2022-06-09T00:00:00Z Now her teddies with feeding tubes and stoma bags are in demand. The teddies helping sick kids feel 'normal' 2019-02-04T05:00:00Z But while the number of stoma bags prescribed in Wales almost trebled in the last 18 years, how the used bags are collected differs depending on where you live. House-share struggles with a stoma 2019-04-16T04:00:00Z Many of the fossils preserve the ancient plants' cuticle, a waxy surface layer that captures fine features, such as the leaf pores called stomata. Middle East fossils push back origin of key plant groups millions of years 2018-12-20T05:00:00Z The stoma - an opening in the tummy - means Hannah lives with an ileostomy bag she calls Mona. Why do people experience phantom rectum? 2018-12-05T05:00:00Z The air space found between the spongy parenchyma cells allows gaseous exchange between the leaf and the outside atmosphere through the stomata. Biology for AP Courses 2022-06-09T00:00:00Z After the surgery, her condition improved slowly each day but she needed further surgery at 13 days old to sort out problems with her stoma, which was fitted during the first operation. 'Miracle' baby's heart stopped for 22 minutes 2018-10-17T04:00:00Z Wayne Lewis, project manager for Crohn's and Colitis UK in Wales, said the challenges of living with a stoma were different for each person and that more support was needed to help people. House-share struggles with a stoma 2019-04-16T04:00:00Z In an ileostomy, the large intestine is removed and the small intestine is diverted to an opening cut into the abdomen, called a stoma. Virginia veteran struggles to get medical supplies 2018-04-07T04:00:00Z A bag is then placed over the stoma to collect liquid and waste, which is emptied into the toilet. Why do people experience phantom rectum? 2018-12-05T05:00:00Z These needle-like leaves have sunken stomata and a smaller surface area: two attributes that aid in reducing water loss. Biology for AP Courses 2022-06-09T00:00:00Z Lacey underwent surgery to reverse the stoma last month, which was successful. 'Miracle' baby's heart stopped for 22 minutes 2018-10-17T04:00:00Z When a plant’s pores, called stomata, open to allow carbon dioxide to enter, they simultaneously allow water to escape. America’s Corn Belt is making its own weather 2018-02-16T05:00:00Z Every other day, Cooper replaces a plastic pouch that is taped to his stoma and catches his digested food. Virginia veteran struggles to get medical supplies 2018-04-07T04:00:00Z Recently, the 26-year-old - who earlier this year underwent emergency surgery to have her colon removed and a stoma created - featured in the band's music video for the song Strip. Why do people experience phantom rectum? 2018-12-05T05:00:00Z The rate of photosynthesis drops when stomata open. Biology for AP Courses 2022-06-09T00:00:00Z The model and bodybuilder uses a stoma bag after his bowel was removed. Model with no bowel denied toilet access 2018-01-15T05:00:00Z Regular visits from a stoma nurse as well as his faith helped with the healing process. Making the most of life with a stoma 2018-01-01T05:00:00Z She was told she would need an ileostomy, an operation involving the small intestine being diverted through an opening - or stoma - in the abdomen. Wearing a stoma: A fight for acceptance 2017-12-12T05:00:00Z Having a stoma means food isn't digested as well as someone with a fully-functioning system. Why do people experience phantom rectum? 2018-12-05T05:00:00Z What are the functions of stomata and guard cells, and what would happen to a plant if these cells did not function correctly? Biology for AP Courses 2022-06-09T00:00:00Z Leon even used practical demonstrations, using sausages to illustrate how the small intestine is co-opted to shunt urine from the kidneys to the stoma and into the urostomy bag. Theatre: The bladder's tale : Nature : Nature Research 2017-11-07T05:00:00Z Wearing a stoma doesn't stop him playing sports such as football and swimming. Making the most of life with a stoma 2018-01-01T05:00:00Z A colostomy bag is then placed over the stoma to collect liquid and waste. Wearing a stoma: A fight for acceptance 2017-12-12T05:00:00Z She felt the skin around her stoma start to burn - a sure sign that it's leaking. Why do people experience phantom rectum? 2018-12-05T05:00:00Z Guard cells regulate the opening and closing of stomata. Biology for AP Courses 2022-06-09T00:00:00Z “While stomata are closed, this small error is now a massive error,” he adds. Overlooked water loss in plants could throw off climate models 2017-07-11T04:00:00Z Living with a stoma is not always easy. Making the most of life with a stoma 2018-01-01T05:00:00Z Before she even met the stoma nurses who would provide support, she was simply handed a stoma bag sample and told she would need to wear one permanently, for the rest her life. Wearing a stoma: A fight for acceptance 2017-12-12T05:00:00Z She has blogged about her journey to "love her new body", including publishing a mini-documentary about an underwear photo-shoot in which her stoma and her scars are on display. Why do people experience phantom rectum? 2018-12-05T05:00:00Z Conifers such as spruce, fir, and pine have oval- shaped leaves with sunken stomata, helping to reduce water loss. Biology for AP Courses 2022-06-09T00:00:00Z “While stomata are closed, this small error is now a massive error,” he adds. Overlooked water loss in plants could throw off climate models 2017-06-27T04:00:00Z An ileostomy is an operation involving the small intestine being diverted through an opening - or stoma - in the abdomen. Making the most of life with a stoma 2018-01-01T05:00:00Z As well as a stoma ring, which protects the skin, and a colostomy bag, the kit may include medical grade wipes, skin protector and a rubbish bag. Wearing a stoma: A fight for acceptance 2017-12-12T05:00:00Z Thousands of people in the UK are living with a stoma bag, having undergone surgery for a number of conditions, including bowel cancer, Chrone's disease and ulcerative colitis. Why do people experience phantom rectum? 2018-12-05T05:00:00Z Succulents such as aloes and agaves have waxy cuticles with sunken stomata, helping to reduce water loss. Biology for AP Courses 2022-06-09T00:00:00Z And when stomata were closed, predicted CO2 concentrations were six times higher than direct measurements taken inside the leaf. Overlooked water loss in plants could throw off climate models 2017-06-27T04:00:00Z A bag is then placed over the stoma to collect liquid and waste. Making the most of life with a stoma 2018-01-01T05:00:00Z With so much carbon dioxide in the air, trees such as the big oak open their stomata — the breathing pores in their leaves — less to take in the carbon dioxide that is their food. Seeing the forest for the trees: What one oak tells us about climate change 2017-04-13T04:00:00Z For the first six weeks, he had to breathe through a stoma in his throat and receive nutrients—orange juice and mashed bananas mixed with milk—through a feeding tube in his nose. The Desperate Battle to Destroy ISIS 2017-01-29T05:00:00Z Conifers such as spruce, orchids, and pine have needle-shaped leaves with sunken stomata, helping to reduce water loss. Biology for AP Courses 2022-06-09T00:00:00Z Plants tend to have fewer stomata when CO2 is plentiful, because water also escapes through these pores and plants must guard against losing too much. Fossil leaves suggest global warming will be harder to fight than scientists thought 2017-01-04T05:00:00Z Michelle admits that she was fortunate to receive good support from her stoma nurses, with whom she is still in touch. Making the most of life with a stoma 2018-01-01T05:00:00Z After surgery to remove the colon, or colectomy, people learn to manage the opening in their abdomen, called an ostomy; the intestinal portion or stoma; and the pouching system that's used to collect bodily waste. When Health Treatments Go From Hospital to DIY 2016-10-14T04:00:00Z She agreed that poor stomata control is probably responsible for the build up of heavy metals in the albino plants. The mystery of the ‘ghost trees’ may be solved 2016-10-07T04:00:00Z A botanist compares the number of stomata between two plants. Biology for AP Courses 2022-06-09T00:00:00Z In the 1980s came the first method based on plant stomata—little openings that allow CO2 into the leaf, where it is fixed into sugars through photosynthesis. Fossil leaves suggest global warming will be harder to fight than scientists thought 2017-01-04T05:00:00Z The stoma varies in size but is easily concealed under clothing. A Day in the Life of a Wound, Ostomy, Continence and Foot Care Nurse 2016-07-13T04:00:00Z My dance partner would now be a shiny red, moist, stoma! Finding My Rhythm: How Ostomy Surgery Helped Me Dance Back Into Life 2016-03-28T04:00:00Z The loss of volatiles is also consistent with the loss of stomata, through which they are emitted for airborne communication and plant defence. The genome of the seagrass Zostera marina reveals angiosperm adaptation to the sea : Nature : Nature Publishing Group 2016-01-26T05:00:00Z One plant, a eucalyptus, has stomata equally distributed on both sides of the leaf. Biology for AP Courses 2022-06-09T00:00:00Z But the number of stomata in each species responds to rising or falling CO2 in its own way. Fossil leaves suggest global warming will be harder to fight than scientists thought 2017-01-04T05:00:00Z The stomata consist of a small pore surrounding by two guard cells. See Incredible Close-Ups of Plant Life Battling Climate Change 2015-11-30T05:00:00Z At this point, the plant is able to perform photosynthesis like a C3 plant, except the stomata don’t have to stay open because the carbon is already available in the leaf. Does Agave Hold the Secret to Drought-Resistant Farming? 2015-07-13T04:00:00Z Fecal matter would be collected in a small pouching system or "bag" that covered the end of the bowel or stoma, which is usually located on the right lower abdomen just below the belt line. Bagging Rights: How Ostomy Surgery Changed My Life 2015-06-23T04:00:00Z The other plant has most of its stomata on the underside of the leaf. Biology for AP Courses 2022-06-09T00:00:00Z The stoma is the small end portion of the intestine that's brought to the abdominal surface and is visible. Life After Colectomy 2015-06-12T04:00:00Z As the plants struggle to adapt, the micrographs of photographer Robert Dash reveal the stomata for the elegant—and fragile—things they are. See Incredible Close-Ups of Plant Life Battling Climate Change 2015-11-30T05:00:00Z At higher temperatures plants open their pores, called stomata, to capture the elevated CO2, which boosts photosynthesis, greening the leaves. Correction: Plants Will Not Flourish as the World Warms 2015-06-10T04:00:00Z That hormone, in turn, reduces water loss by closing stomata. Protein tweak boosts plants' drought tolerance 2015-02-03T05:00:00Z The stomata are typically located on the underside of the leaf, which helps to minimize water loss. Biology for AP Courses 2022-06-09T00:00:00Z People with stomas learn to use a pouching system – a collection bag, which attaches to a protective skin barrier and is fitted around the stoma. Life After Colectomy 2015-06-12T04:00:00Z Higher CO2 lets them cut water losses because they can take in enough of the gas without opening their pores, or stomata, as widely. Tropical forests may not combat climate change 2014-12-15T05:00:00Z But plants also tend to close their stomata in warmer temperatures to prevent water loss. Correction: Plants Will Not Flourish as the World Warms 2015-06-10T04:00:00Z And closing stomata could interfere with the plant’s ability to regulate leaf temperature, he adds. Protein tweak boosts plants' drought tolerance 2015-02-03T05:00:00Z Each stoma is flanked by guard cells that regulate the opening and closing of the stomata by swelling or shrinking in response to osmotic changes. Biology for AP Courses 2022-06-09T00:00:00Z Gaitán's team is trying to arrest the infiltration of coffee rust, which occurs when the fungus spore germinates and penetrates the plant's stomata. In Colombia, coffee scientists urge: Viva la resistencia! 2014-09-18T04:00:00Z Using a process where chosen genes are forced into the leaf's stomata, or tiny gas exchange openings, they tagged the genes with a florescent tracker and then injected them into tobacco plant leaves. Tiny Bacteria Provide Genetics to Save Food 2014-06-19T04:00:00Z Free personal care can include a range of assistance from bathing and showering to catheter/stoma care or help with preparing food. Councils charging terminally ill 2014-06-15T04:00:00Z The technique, reported on 4 February in Nature1, works by closing tiny pores — called stomata — in leaves that let in carbon dioxide, a key ingredient in photosynthesis, but lose water in the process. Protein tweak boosts plants' drought tolerance 2015-02-03T05:00:00Z Gas is exchanged through pores called stomata, which are opened and closed by the guard cells. Biology for AP Courses 2022-06-09T00:00:00Z They suspect the additional gas allowed the plants to grow without opening their stomata as wide. Matter: Springing Forward, and Its Consequences 2014-04-23T17:45:41Z During the operation, surgeons created a stoma, or opening in his abdomen, to connect to a bag which collects his urine. Why is no one talking about bladder cancer? 2014-03-01T00:07:08Z NHS Clinical Commissioning Groups across the country are trying to reduce spending in the area of stoma care. Concerns over NHS sponsored nurses 2013-09-26T15:07:57Z “These plants open their stomata only to the extent that is required to continue their productivity, yet grow grain only to the extent that is possible — these are plants that breeders want.” Plant breeding: Discovery in a dry spell 2013-09-25T21:50:44.027Z Explain why plants must regulate the opening and closing of stomata. Biology for AP Courses 2022-06-09T00:00:00Z That’s because they absorb carbon dioxide from the air by opening tiny holes called stomata. Matter: Springing Forward, and Its Consequences 2014-04-23T17:45:41Z Then, in 1982 or so, about 10 years after passage of the Clean Air Act that cut back on such pollution, the stomata began to reopen. Trees Write Air Pollution Record In Wood 2013-09-09T12:45:57.837Z The British Healthcare Trade Association represents the manufacturers of stoma products. Concerns over NHS sponsored nurses 2013-09-26T15:07:57Z “There are plants that cleverly change their mechanism to continue transpiration,” says Kumar, referring to the process by which plants control water loss through stomata — the openings that also draw in carbon dioxide. Plant breeding: Discovery in a dry spell 2013-09-25T21:50:44.027Z Transpiration—the loss of water vapor to the atmosphere through stomata—is a passive process, meaning that metabolic energy in the form of ATP is not required for water movement. Biology for AP Courses 2022-06-09T00:00:00Z Called a stoma, the hole in her throat allowed her to breathe after her larynx was removed at age 42. Woman who smoked through hole in throat dies 2013-02-28T18:48:13Z Also, the scientists will look for carbonate nodules and the density of tiny openings known as stomata on fossil plant leaves. Did the Reign of Dinosaurs Begin, as Well as End, with a Meteorite Strike? 2012-09-17T16:15:00.223Z Patients may require stoma surgery following treatment for cancer. Concerns over NHS sponsored nurses 2013-09-26T15:07:57Z Penn., Mich., and northward, often with the two preceding.—Frequently with a few stomata, especially in Niagara specimens. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Regulation of transpiration, therefore, is achieved primarily through the opening and closing of stomata on the leaf surface. Biology for AP Courses 2022-06-09T00:00:00Z The wide stomata upon the abdominal surface of the diaphragm allows the facile entrance of the organisms into its lymphatics. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z Transpiration is loss of water by the plant by evaporation, chiefly from the minute pores or stomata on the leaves. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 7 "Horticulture" to "Hudson Bay" 2012-03-04T03:00:13.390Z The characters of leaves most useful for diagnostic purposes are the position of the stomata, the presence and arrangement of resin-canals, the structure of the mesophyll and vascular bundles. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z Frond more or less cavernous; the upper surface furnished with stomata.—These plants may be regarded as very simplified Araceæ. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z When stomata are open, however, water vapor is lost to the external environment, increasing the rate of transpiration. Biology for AP Courses 2022-06-09T00:00:00Z Arnold represents the most strenuous advocates of the stomata theory, according to which the leucocytes pass through canals normally existing in the wall. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z The tissue is often raised above the veins, forming longitudinal ridges, generally on the upper face; the stomata are in lines in the intervening furrows. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z The stomata are frequently arranged in rows, their position being marked by two white bands of wax on the leaf-surface. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z The essential portion of any blood vessel is the endothelial tube, composed of flat cells cemented together by intercellular substance and having no stomata between the cells. Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. 2011-10-11T02:01:07.890Z Xerophytes and epiphytes often have a thick covering of trichomes or of stomata that are sunken below the leaf’s surface. Biology for AP Courses 2022-06-09T00:00:00Z The prevailing views at the present time are in favor of the artificial nature of the stomata and pores in the walls of the blood-vessels. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z The coal soot falls in flakes like lamp-black, which covers the surface and obstructs the transpiration of the stomata, and thus seriously affects the health of plants in such situations. American Pomology Apples 2011-10-03T02:00:29.477Z A, B, Section of Leaf of Potato with sporangiophores of Phytophthora infestans passing through the stomata D, on the under surface of the leaf. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z Its epidermis had thick outer walls, a well-developed cuticle and silica deposits, and its stomata were situated well below the stem surface and were protected by cover-cells and silica deposits. Newly Discovered Plant Fossil Reveals More Than Age 2011-05-06T16:37:00Z Guard cells regulate the opening and closing of stomata. Biology for AP Courses 2022-06-09T00:00:00Z This layer is pierced by a number of small openings, known as stomata, which bring the cavity into direct communication with lymph spaces or vessels lying beneath the membrane. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6 "English Language" to "Epsom Salts" 2011-02-19T03:00:59.807Z This difference may be accounted for by the closure of the stomata at night, a phenomenon unknown to Hales. Rustic Sounds and Other Studies in Literature and Natural History Small portion of epidermis of the lower face of a White-Lily leaf, with stomata. The Elements of Botany For Beginners and For Schools The dura mater is well provided with lymph vessels, which in all probability open by stomata on the free inner surface. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" Presence of stomata on the abaxial or bottom surface ensures that no, or very little, water is lost due to guttation. Biology for AP Courses 2022-06-09T00:00:00Z Three stomata are seen surrounded by cubical cells. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6 "English Language" to "Epsom Salts" 2011-02-19T03:00:59.807Z The rate of this current is an index of the degree to which the stomata are open. Rustic Sounds and Other Studies in Literature and Natural History Small portion of epidermis of the Garden Balsam, highly magnified, showing very sinuous-walled cells, and three stomata. The Elements of Botany For Beginners and For Schools A microscopic examination of the particles of which the garden is composed shows that they contain remains of leaves; bits of epidermis, stomata, spiral vessels, etc., occur in them. The Industries of Animals Herbivores do not prefer to eat leaves with stomata on the abaxial or bottom surface. Biology for AP Courses 2022-06-09T00:00:00Z The stomata are surrounded by a special layer of cubical and granular cells. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6 "English Language" to "Epsom Salts" 2011-02-19T03:00:59.807Z When, however, the same trial is made on the upper surface of a leaf, where stomata do not occur, no such change occurs. Rustic Sounds and Other Studies in Literature and Natural History In the White Lily the stomata are so remarkably large that they may be seen by a simple microscope of moderate power, and may be discerned even by a good hand lens. The Elements of Botany For Beginners and For Schools At intervals along the surface of the epicarp are stomata, or breathing pores, surrounded by guard cells. All About Coffee Conifers such as spruce, fir, and pine have needle-shaped leaves with sunken stomata, helping to reduce water loss. Biology for AP Courses 2022-06-09T00:00:00Z Through these stomata fluids and other materials present in the body-cavity can be removed into the lymph spaces. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6 "English Language" to "Epsom Salts" 2011-02-19T03:00:59.807Z It was clearly very sensitive to moisture, and it seemed possible that horn-shavings might be used to test the condition of the stomata. Rustic Sounds and Other Studies in Literature and Natural History The pores which traverse longitudinally the channelled grooves by which the stems of our recent Equiseta are so delicately fluted, are said considerably more to resemble the discs of pines and araucarians than ordinary stomata. The Testimony of the Rocks or, Geology in Its Bearings on the Two Theologies, Natural and Revealed In several species of the Soft Pines the longitudinal lines of stomata are very conspicuous from the white bloom which modifies materially the general color of the foliage. The Genus Pinus What does the positioning of the stomata indicate about which leaf surfaces on the two plants receive light in their natural environment? Biology for AP Courses 2022-06-09T00:00:00Z Motor cells; 2. stomata; 3. sclerenchyma; 4. epidermis; 5. cutin layer. A Handbook of Some South Indian Grasses A delicate strip of horn was fixed to a little block of cork and placed on a leaf, and to my delight showed the stomata to be open by violently curving upwards. Rustic Sounds and Other Studies in Literature and Natural History The layer forming the roof is called the "epidermis," and the small opening left leading into the chamber is bounded by a special ring of cells and forms the "stoma" or air-pore. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Leaves from 8 to 12 cm. long, serrulate, stomata ventral only, resin-ducts medial and confined to the angles. The Genus Pinus Under drought conditions, the stomata close to conserve water and leaves may also be shed if the drought continues. Biology for AP Courses 2022-06-09T00:00:00Z In the leaves of many grasses stomata are found in both the upper and the lower epidermis and they are confined to the lower epidermis in a few grasses only. A Handbook of Some South Indian Grasses The instrument is not of course accurately quantitative, but it does at least show whether the stomata are nearly shut, moderately open, or widely so. Rustic Sounds and Other Studies in Literature and Natural History B, Air-chamber with the filaments of assimilating cells and stoma in vertical section. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Leaves from 5 to 12 cm. long, serrulate; stomata ventral only; resin-ducts medial or, in the dwarf form, often external. The Genus Pinus Under drought conditions, the stomata close to conserve water and leaves may also be shed if the drought continues. Biology for AP Courses 2022-06-09T00:00:00Z The continuity of both the upper and the lower epidermis is interrupted by the stomata. A Handbook of Some South Indian Grasses The stomata in fact are the arbiters of what shall pass in or out of the body of the leaf; p. 212they are the gate-keepers who regulate both export and import. Rustic Sounds and Other Studies in Literature and Natural History The wall of the capsule is several layers of cells thick, and since the epidermis contains functional stomata and the underlying cells possess chlorophyll it is capable of assimilation. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Leaves from 4 to 7 cm. long, entire, stout, persistent for several years; stomata dorsal and ventral; resin-ducts external. The Genus Pinus Under drought conditions, the stomata close to conserve water and leaves may also be shed if the drought continues. Biology for AP Courses 2022-06-09T00:00:00Z The arrangement of the stomata, the shape of the guard cells and the characteristics of the epidermal cells become clear on examining a piece of epidermis. A Handbook of Some South Indian Grasses There are other methods of demonstrating the movements of the stomata. Rustic Sounds and Other Studies in Literature and Natural History The capsule is similar to that of Anthoceros, but has no stomata, and the elaters have spirally thickened walls. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Leaves from 3 to 9 cm. long, entire, or serrulate in the southern variety, persistent for five or six years; stomata dorsal and ventral or, in the south, sometimes ventral only; resin-ducts external. The Genus Pinus I also noticed markings on the bark, particularly the stomata, which differed with each variety. Growing Nuts in the North A Personal Story of the Author's Experience of 33 Years with Nut Culture in Minnesota and Wisconsin Motor cells; 2. stomata; 3. sclerenchyma; 4. chlorophyllous layer; 5. vascular strand cut through; 6. hair. A Handbook of Some South Indian Grasses A dry piece of this material, applied with proper precaution to the stomata-bearing surface of a leaf, rapidly changes to pink if the stomata are open. Rustic Sounds and Other Studies in Literature and Natural History The capsule, the wall of which bears rudimentary stomata, has a small operculum but no peristome. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Leaves from 10 to 20 cm. long, serrulate, their stomata ventral only, their resin-ducts external, often numerous. The Genus Pinus This water is thrown off through little pores or mouths or stomata which are very small and very numerous on the under side of the leaf. The First Book of Farming Cells overlying the veins; 2. cells overlying the furrows; 3. stomata. A Handbook of Some South Indian Grasses The microscopical inspection of stomata is not a completely satisfactory method of discovering to what degree they are open. Rustic Sounds and Other Studies in Literature and Natural History The apophysis, which may be a more or less distinct region, usually bears stomata and is the main organ of assimilation. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" P. Lambertiana is recognized by its long cone and by the constant dorsal stomata of its leaves. The Genus Pinus The under side of the leaf contains hundreds of little pores or mouths called stomata. The First Book of Farming Cells overlying the veins; 2. cells overlying the furrows; 3. stomata. A Handbook of Some South Indian Grasses The result is that a current of air is drawn through the stomata into the leaf, and then out of the leaf into the cavity of the porometer. Rustic Sounds and Other Studies in Literature and Natural History The same injurious effect results when the stomata of the roots are interfered with. Studies of Trees Leaves from 7 to 10 cm. long, erect, serrulate; stomata ventral only; resin-ducts external. The Genus Pinus The frond of Ceterach is very frondose-looking, it has stomata on its under surface, and the cells of the cuticle very sinuate. Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries The epidermis covering the leaves consists of elongated cells with plane or sinuous walls, various kinds of short cells intercalated between the ends of long cells, motor-cells and stomata. A Handbook of Some South Indian Grasses It is this way: if we had a magnifying glass we should find over the inner surface of leaves, pores, or stomata as they are called. The Library of Work and Play: Gardening and Farming. "This is a preparation of stomata," he said, recognizing it from a print in his book on botany. The Firm of Girdlestone Leaves from 6 to 10 cm. long, serrulate; stomata dorsal and ventral; resin-ducts external. The Genus Pinus It may be that the freezing point of liquids under pressure in the plant cells or exposed to the air through the stomata is not the same as in the free air. Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86 The stomata occur in regular rows between the vascular bundles and they are quite characteristic of grasses. A Handbook of Some South Indian Grasses A great body of water, as I have said before, passes out of the plant through the stomata. The Library of Work and Play: Gardening and Farming. In direct contrast with the ordinary desert-types they have a thin epidermis, with exposed stomata, features that ordinarily were characteristic of species of moister regions. Species and Varieties, Their Origin by Mutation Leaves from 6 to 10 cm. long, serrulate; stomata dorsal and ventral; resin-ducts external. The Genus Pinus The breathing pores, or stomata, of the leaves, are small openings in the epidermis through which the air can pass into the interior of the plant. Outlines of Lessons in Botany, Part I; from Seed to Leaf They are called stomata, or breathing-pores, and are on both sides of the leaf in most plants, but usually are in far greater abundance on the lower side. Nature's Serial Story This important process known as carbon assimilation is made possible by the aid of countless small openings which exist chicfly on the surfaces of leaves and known as "stomata." Dry-Farming : a System of Agriculture for Countries under a Low Rainfall See Francis Darwin, on the relation between "bloom" on leaves and the distribution of the stomata. More Letters of Charles Darwin — Volume 2 Leaves from 2 to 4 cm. long, persistent for many years; stomata ventral only; resin-ducts external. The Genus Pinus Through the stomata, when open, free interchange may take place between the external air and that within the leaf, and thus transpiration be much facilitated. Outlines of Lessons in Botany, Part I; from Seed to Leaf In such emergencies these little stomata, or mouths, shut up partly or completely, and so do much to check the exhalation. Nature's Serial Story The stomata are delicately balanced valves, exceedingly sensitive to external influences. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall But in point of fact, as studies of a later generation were to show, it is the under surface of the leaf that is most abundantly provided with stomata, or "breathing-pores." A History of Science — Volume 4 Leaves from 2 to 4 cm. long, persistent for many years; stomata ventral only; resin-ducts external. The Genus Pinus Whether it is best to try to explain to the pupils the structure of these valves, or stomata, must be left to each teacher. Outlines of Lessons in Botany, Part I; from Seed to Leaf The "minutely furfuraceous-punctulate" character of the tubercle is common to all the species of Anhalonium I have seen, and simply represents the external openings of the remarkably long cuticular passageways to the stomata. North American Species of Cactus It has been estimated that 150,000 stomata or more are often found per square inch on the under side of the leaves of ordinary cultivated plants. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall Leaves from 3 to 8 cm. long, slender, serrulate; stomata ventral only; resin-ducts external and dorsal. The Genus Pinus The dorsal umbo, the articulate seed-wing, the persistent fascicle-sheath, the dorsal and ventral stomata of the leaf and its serrate margins, the dentate walls of the ray-tracheids have become fixed and constant. The Genus Pinus Each of these openings is called a stoma. Outlines of Lessons in Botany, Part I; from Seed to Leaf Leaves from 10 to 18 cm. long, drooping, serrulate; stomata ventral only; resin-ducts external but often with a medial ventral duct. The Genus Pinus The stomata or breathing-pores are so constructed that they may open and close very readily. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall Leaves from 4 to 10 cm. long, serrulate; stomata ventral or rarely with a few dorsal stomata; resin-ducts external. The Genus Pinus Leaves from 8 to 15 cm. long, serrulate; stomata ventral only; resin-ducts external, external and medial, or medial, all three conditions sometimes occurring in leaves of the same branchlet. The Genus Pinus Leaves from 6 to 14 cm. long, serrulate; stomata ventral only; resin-ducts external. The Genus Pinus Leaves in fascicles of three, the sheath revolute at the base, then deciduous; stomata ventral, or ventral and dorsal; resin-ducts external. The Genus Pinus It is also through the stomata that the water which is drawn from the soil by the roots through the stems is evaporated into the air. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall It is through the stomata that the gases of the air enter the plant through which the discarded oxygen returns to the atmosphere. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall Leaves from 7 to 10 cm. long, serrulate; stomata dorsal and ventral; resin-ducts external or with one or two ventral medial ducts. The Genus Pinus |
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