| 单词 | peristome |
| 例句 | A structure called a peristome increases the spread of spores after the tip of the capsule falls off at dispersal. Fundamentals of Biology 2015-01-01T00:00:00Z The "rim" of the cup or peristome is often colourful, it is thought, to catch the eye of passing bugs. Pollutant turns fly-traps veggie 2012-06-13T23:46:37Z During each forward movement the column is arched downwards so that the peristome is in contact with the surface along which the animal is moving. Freshwater Sponges, Hydroids & Polyzoa 2011-06-25T02:00:17.833Z Grooves and peristome protected by small plates, which can open over the grooves. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 "Echinoderma" to "Edward" 2011-01-19T03:00:19.027Z The tentacles surround an area known as the peristome, in the middle of which there is an elongated mouth-opening surrounded by tumid lips. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" When moist the peristome closes hygrometrically over the orifice more or less; when drier the teeth or processes commonly bend outward or recurve; and then the spores more readily escape. The Elements of Botany For Beginners and For Schools In mosses the teeth of the peristome are arranged in fours, or in some multiple of that number. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Its removal does not, however, leave the mouth of the capsule wide open, for around the margin are two circles of pointed teeth forming the peristome. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" The peristome is limited to the left edge, where it forms a small depression which may or may not reach the anterior border, but which in no case runs around the anterior margin. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 Each mesentery is attached by its upper margin to the peristome, by its outer margin to the body-wall, and by its lower margin to the basal disk. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" Summit of an open spore-case of a Moss, which has a peristome of 16 pairs of teeth. The Elements of Botany For Beginners and For Schools Behind the white thickened peristome, intemaily is a dark brown band, which is seen through the shell as a dark blackish green stripe. Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 2 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" The left peristome margin in some cases grows over the peristome depression toward the right, thus making a sort of cover for the peristome. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 Other mesenteries, called incomplete, are not attached to the stomodaeum, and their internal margins are free from the peristome to the basal disk. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" The species is widely umbilicated, and the peristome is usually dark-coloured. Explorations in Australia The Journals of John McDouall Stuart The entire lip is marginated by the thickened and reflected peristome. Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 2 The sporogonium is of large size and highly organized, though it presents peculiar features in the peristome. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" A long peristome stretches down the thin, ventral side of the proboscis, and the mouth proper is situated at the junction of the proboscis and body; the mouth, as a rule, is invisible. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 In common with all Coelenterate animals, the walls of the columnar body and also the tentacles and peristome of Actinia are composed of three layers of tissue. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" There are no bristles on the outside of the collar or peristome, as in the foregoing species. Insectivorous Plants The sinuation of the outer lip and impression of the whorl behind the peristome, give a slightly ringent aspect to the mouth. Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 2 More usually there is a peristome, consisting of one or two series of teeth, which serves to narrow the opening and in various ways to ensure the gradual shedding of the spores in dry weather. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" It is sometimes approached by a very shallow depression or peristome from the anterior end, and marked by two rows of cilia. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 It can be entirely withdrawn and folded together in the peristome. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 These, with seven or eight long bristles on both sides of the peristome, form a sort of net over the valve, which would tend to prevent all animals, excepting very small ones, entering the bladder. Insectivorous Plants On the right edge of the peristome are large, powerful cilia. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 In Polytrichum a membranous epiphragm stretches across the wide mouth of the capsule between the tips of the short peristome teeth, and closes the opening except for the interspaces of the peristome. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Diagnostic characters: The mouth is at the end of a long peristome running along the ventral side; the body is dorso-ventrally or laterally compressed. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The mouth and relatively small peristome are situated in the lower third of the body. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome begins as a shallow furrow at the center of the ventral surface and dips sharply into the buccal depression, which is deep and turned toward the posterior end. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome is a small groove leading from the anterior end to the mouth about midway down the ventral side of the body. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 Modern classifications of the Bryales depend mainly on the construction of the peristome. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" The entire left edge of the peristome is provided with an undulating membrane which occasionally runs around the posterior end of the peristome to form a "pocket" leading to the mouth. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 I was unable to find any cilia in the peristome. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The edges of the peristome bear undulating membranes as in L. infusionum. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 Peristomial depression short; limited to the anterior end; its plane at right angles to the long axis of body; surface of peristome striated and ciliated; no undulating membranes Family Stentoridæ 2. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 Body cylindrical; size medium; peristome long and turns sharply to the left at the extremity Genus Metopus 2. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The right edge of the peristome is provided with a less-developed membrane. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 No torsion in the peristome; undulating membrane is confined to the posterior part of peristome Genus Blepharisma 3. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The chief characteristic is the peristome, which is not a furrow, but a broad triangular area deeply insunk and ending in a point at the mouth. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The adoral zone is usually confined to the left peristome edge, or it may cross over to the right anterior edge. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The anterior half of the body tapers to nearly a point in front; the peristome is narrowest at the apex; the mouth is the entire peristome base. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome begins as a small depression, but becomes larger until it takes in nearly all of the ventral surface. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The anterior end does not taper; the peristome is widest at the end of the body; the mouth is clearly defined. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome is broad and triangular, the base of the triangle being the entire anterior end of the body. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The entire length of the peristome is one-fourth or less of the body length. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The right edge of the peristome is lamellate and bears a clearly defined undulating membrane. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The depression becomes much deeper at about the center of the body, and is especially marked on the left side of the peristome. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The adoral zone is well developed upon the left edge of the peristome, from which it passes around anteriorly to the right edge. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The surface of the peristome is free from cilia, but the rest of the body is uniformly coated with small active cilia. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The triangular peristome takes up the greater part of the anterior end, and the mouth is situated at the sharper angle of the triangle, about one-fourth of the total length from the anterior end. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The motile organs consist of an adoral zone of membranelles, which stretch along the left edge of the peristome and the front edge of the body. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 Upon the left edge of the peristome is a high, undulating membrane, sail-like in appearance when extended. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The right edge of the peristome supports an undulating membrane. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 Diagnostic characters: The peristome is relatively short and limited to the front end of the animal, so that its plane is nearly at right angles to that of the longitudinal axis of the body. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The adoral zone of cilia either passes entirely around the peristome edge or ends at the right-hand edge. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The surface of the peristome is spirally striated and provided with cilia. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 This may stretch around the posterior edge of the peristome and upon the right aide, thus forming a pocket by means of which the food particles are directed into the mouth. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 A ring of long cirri surround the anterior end and pass into the peristome, and from the left edge of this line of cirri a large adoral zone continues down to the mouth. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome is elongate and sac-form, and the mouth lies at the posterior extremity. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 Diagnostic characters: The peristome is not always marked off from the frontal area. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 In addition to the adoral zone there is an undulating membrane on the right side of the peristome, and in some cases a row of cilia between the membrane and the adoral zone. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The ventral surface is almost entirely taken up by a peristome which extends from the anterior end posteriorly three-quarters of the body length. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 Right margin of peristome straight as far as the anterior end; 5 rows ventral cirri; 5 anal cirri Genus Oxytricha Right margin of peristome curved 7 7. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome is short and stretches around the front end of the animal. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The anterior cirri appear to line the upper left border of the peristome, which is marked by a row of large cilia. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome begins upon the right side of the anterior end and passes backward and to the left, narrowing at this point. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The posterior end of the peristome is straight, the left curved, following the depressed portion. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome is long and rather narrow and carries an undulating membrane on its right margin. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome is long and narrow, with a distinct adoral zone which appears broken in its course. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 On the right border of the peristome is an undulating membrane. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 In front the peristome bends sharply to the right and extends as far as the right end of the adoral zone. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The body is covered with fine cilia in longitudinal lines, except on the peristome. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome is long and broad, with considerable variation. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome is broad but less extensive than in Euplotes, and may extend beyond the middle of the body. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The frontal margin is characterized by a row of powerful membranelles, which become smaller at the peristome and at the mouth they are of characteristically small size. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome is well-marked by the adoral zone, and upon its right border there is a row of cilia, and a similar row of cilia runs along the base of the oral membranelle. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The mouth is small and situated in the hollow of the peristome near the left border. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The open peristome is broad and reaches back to the middle of the ventral surface and beyond. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome is wide and open, and a small pocket-like hollow on its left border indicates the region of the mouth. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 I was unable to see such a membrane in this form, but in its place there are 2 flagella-like cirri extending from the margin of the mouth-opening into the peristome, and these vibrate slowly. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome is in the posterior half of the body and an undulating membrane extends from it into the œsophagus. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 On the left peristome edge is a large undulating membrane. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The peristome, contractile vacuole, and nucleus are similar to the preceding. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The surface of this disk and the surface of the peristome may be brought into the same plane by the characteristic bending of the stalk portion. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 A distinct axial fiber extends from the pedal disc to the peristome and gives off a number of branches. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 When not contracted, the peristome end is widespread, rarely narrowed. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 It begins near the anterior end of the body and increases in height posteriorly following the peristome edge around on the right side. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The adoral zone and peristome agree with the details given in the family characteristics. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The diameter of the peristome is a little larger than the length of the body. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 |
| 随便看 |
|
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。