| 单词 | monocot |
| 例句 | Most modern angiosperms are classified as either monocots or eudicots, based on the structure of their leaves and embryos. Fundamentals of Biology 2015-01-01T00:00:00Z This feature is still seen in the modern monocots. Concepts of Biology 2013-04-25T00:00:00Z This tissue enables the monocot leaf blade to increase in length from the leaf base; for example, it allows lawn grass leaves to elongate even after repeated mowing. Biology for AP Courses 2022-06-09T00:00:00Z Today, monocots form a single group, but dicots fall into different categories. Miller & Levine Biology 2018-01-01T00:00:00Z I always get very excited when I see those little monocots and dicots poking out of the soil. Perspective | What my garden taught me about infertility 2022-04-08T04:00:00Z Basal angiosperms, such as water lilies, are considered more primitive because they share morphological traits with both monocots and eudicots. Fundamentals of Biology 2015-01-01T00:00:00Z True woody tissue is rarely found in monocots, and the vascular tissue of the stem is not arranged in any particular pattern. Concepts of Biology 2013-04-25T00:00:00Z Dicots have a tap root system, while monocots have a fibrous root system. Biology for AP Courses 2022-06-09T00:00:00Z Angiosperms are called either monocots or dicots based on the number of seed leaves they produce. Miller & Levine Biology 2018-01-01T00:00:00Z Scientists have long had trouble placing monocots, whose seeds contain just one embryonic leaf, on the plant family tree. This lovely lily’s cousin is an ear of corn. Now, scientists know how they are related 2018-11-05T05:00:00Z The number of sepals and petals varies depending on whether the plant is a monocot or dicot. Fundamentals of Biology 2015-01-01T00:00:00Z Basal angiosperms are a group of plants that are believed to have branched off before the separation into monocots and eudicots because they exhibit traits from both groups. Concepts of Biology 2013-04-25T00:00:00Z One student picks a blade of grass in the field and identifies it as a dicot leaf, but his partner thinks it is a monocot. Biology for AP Courses 2022-06-09T00:00:00Z In monocots, clusters of xylem and phloem tissue, called vascular bundles, are scattered through stem ground tissue. Miller & Levine Biology 2018-01-01T00:00:00Z They sequenced the DNA in the chloroplasts of 545 monocots and of 22 other plants. This lovely lily’s cousin is an ear of corn. Now, scientists know how they are related 2018-11-05T05:00:00Z In monocots, petals usually number three or multiples of three; in dicots, the number of petals is four or five, or multiples of four and five. Fundamentals of Biology 2015-01-01T00:00:00Z The flowering plants are divided into two main groups—the monocots and eudicots—according to the number of cotyledons in the seedlings. Concepts of Biology 2013-04-25T00:00:00Z Secondary growth or “wood” is noticeable in woody plants; it occurs in some dicots, but occurs very rarely in monocots. Biology for AP Courses 2022-06-09T00:00:00Z These species were selected in order to provide a phylogenetic representation traversing green algae, basal plants, monocots, and dicots. The genome of the seagrass Zostera marina reveals angiosperm adaptation to the sea : Nature : Nature Publishing Group 2016-01-26T05:00:00Z But leaves in monocots’ aquatic ancestors presumably floated and thus could do with a less extensive—and expensive—support system. This lovely lily’s cousin is an ear of corn. Now, scientists know how they are related 2018-11-05T05:00:00Z This difference in the number of embryonic leaves is the basis for the two major groups of angiosperms: the monocots and the eudicots. Fundamentals of Biology 2015-01-01T00:00:00Z Basal angiosperms belong to a lineage older than monocots and eudicots. Concepts of Biology 2013-04-25T00:00:00Z In dicot roots, the xylem and phloem of the stele are arranged alternately in an X shape, whereas in monocot roots, the vascular tissue is arranged in a ring around the pith. Biology for AP Courses 2022-06-09T00:00:00Z An additional protein ‘monocot’ Markov Model was built based on the protein sequences from Brachypodium, maize and sorghum. The genome of the seagrass Zostera marina reveals angiosperm adaptation to the sea : Nature : Nature Publishing Group 2016-01-26T05:00:00Z But leaf bases in monocots tend to clasp the stem with an array of “fingers,” which makes sense if swirling water tossed the leaves every which way, Givnish says. This lovely lily’s cousin is an ear of corn. Now, scientists know how they are related 2018-11-05T05:00:00Z Sugar, to sweeten dishes, is produced from the monocot sugarcane and the eudicot sugar beet. Fundamentals of Biology 2015-01-01T00:00:00Z Among the species were rice and sorghum, which represent one modern group of flowering plants called the monocots. Double the Genes, Double the Flora 2011-04-10T18:00:00Z In monocots, the vascular bundles form a distinct ring. Biology for AP Courses 2022-06-09T00:00:00Z The monocot root is similar to a dicot root, but the center of the root is filled with pith. Fundamentals of Biology 2015-01-01T00:00:00Z As comprehensive as this new family tree is, it needs refining, Kellogg says, so that more than just monocots’ larger groups are in their proper places. This lovely lily’s cousin is an ear of corn. Now, scientists know how they are related 2018-11-05T05:00:00Z Part B is a cross section of a monocot stem. Fundamentals of Biology 2015-01-01T00:00:00Z One duplication occurred 200 million years ago, just before monocots and eudicots arose. Double the Genes, Double the Flora 2011-04-10T18:00:00Z In monocots, the vascular tissue forms a characteristic X shape in the center. Biology for AP Courses 2022-06-09T00:00:00Z In monocots, the vascular bundles are scattered in the ground tissue. Biology for AP Courses 2022-06-09T00:00:00Z Thanks to a common ancestor 137 million years ago, the roots, seeds, and sometimes leaves of these flowering plants—known as monocots—look alike. This lovely lily’s cousin is an ear of corn. Now, scientists know how they are related 2018-11-05T05:00:00Z In the monocot stem, the vascular bundles are scattered throughout the ground tissue. Fundamentals of Biology 2015-01-01T00:00:00Z In monocot roots, the pith is absent or very small. Biology for AP Courses 2022-06-09T00:00:00Z Fibrous root systems are found in monocots and tap root systems are found in dicots. Biology for AP Courses 2022-06-09T00:00:00Z Fibrous root systems are found in monocots and tap root systems are found in dicots. Biology for AP Courses 2022-06-09T00:00:00Z The nonmonocots most closely related to that base indicate the first monocots were aquatic plants, Givnish’s team reported last month in the American Journal of Botany. This lovely lily’s cousin is an ear of corn. Now, scientists know how they are related 2018-11-05T05:00:00Z Which type of root system is found in monocots? Fundamentals of Biology 2015-01-01T00:00:00Z Fibrous root systems are found in monocots and tap root systems are found in dicots. Biology for AP Courses 2022-06-09T00:00:00Z Taproot systems are found in monocots and fibrous root systems are found in dicots. Biology for AP Courses 2022-06-09T00:00:00Z Samples of leaves from monocots and dicots are piled on the table in a laboratory and students are sorting the leaves. Biology for AP Courses 2022-06-09T00:00:00Z “It allows you think about the origin of monocot features.” This lovely lily’s cousin is an ear of corn. Now, scientists know how they are related 2018-11-05T05:00:00Z Fibrous root systems are found in monocots; tap root systems are found in dicots. Fundamentals of Biology 2015-01-01T00:00:00Z What information will help them know which leaves to identify as monocots? Biology for AP Courses 2022-06-09T00:00:00Z They are asked to develop a key system to classify the slides as coming from either monocot or dicots. Biology for AP Courses 2022-06-09T00:00:00Z For example, monocot leaves tend to have parallel veins running the long way up the leaves, whereas other flowering plant leaves have branching veins. This lovely lily’s cousin is an ear of corn. Now, scientists know how they are related 2018-11-05T05:00:00Z Not just seeds, but monocot leaves and roots are different from those of other flowering plants, and the aquatic origin may explain why. This lovely lily’s cousin is an ear of corn. Now, scientists know how they are related 2018-11-05T05:00:00Z |
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