| 单词 | external gill |
| 例句 | Frogs, toads, and newts all hatch from the eggs as larvae with external gills but it will take some time for the amphibians to interact outside with pulmonary respiration. Fundamentals of Biology 2015-01-01T00:00:00Z Some salamanders are lungless, and respiration occurs through the skin or external gills. Concepts of Biology 2013-04-25T00:00:00Z This also occurs naturally under favorable conditions, in its native localities; although it commonly lives and breeds in a larval state, with persistent external gills. Webster's Unabridged Dictionary (2nd 100 Pages) 2012-03-24T02:00:19.387Z The larva on leaving the egg is about an inch long, provided with three branched external gills on each side, and showing mere rudiments of the four limbs. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z The external gills are long and filamentous, and the yolk sac is large. Neotropical Hylid Frogs, Genus Smilisca 2011-10-24T02:00:14.853Z The majority of salamanders are lungless, and respiration occurs through the skin or through external gills. Fundamentals of Biology 2015-01-01T00:00:00Z If you cut it off from a tadpole which is old enough to have lost its external gills a week or more, the tail will not live more than three or four days. School Reading by Grades Sixth Year 2011-07-31T02:00:11.420Z The young have external gills which are afterwards replaced by true lungs, and this peculiar metamorphosis shows that they belong to the amphibia rather than to the reptiles. Island Life Or the Phenomena and Causes of Insular Faunas and Floras This was at a time when the limb buds could not be detected and when the external gills were evident only under close scrutiny. Natural History of the Salamander, Aneides hardii The external gills are moderately long, slender, and filamentous; the yolk sac is still moderately large. Neotropical Hylid Frogs, Genus Smilisca 2011-10-24T02:00:14.853Z These are the external gills, through which the animal breathes the oxygen dissolved in the water. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" What is the advantage of external gills at this stage in the tadpole's life? Ontario Teachers' Manuals: Nature Study In accordance with this abbreviated development, the caudal membranous crest does not exist, and the branchial aperture closes as soon as the external gills disappear. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" They have permanent external gills as well as lungs. The Gutenberg Webster's Unabridged Dictionary Section P and Q By the time the larvae have developed to stage 21, external gills are present, the caudal musculature and caudal fin have been differentiated, and the head is distinguishable from the body. Neotropical Hylid Frogs, Genus Smilisca 2011-10-24T02:00:14.853Z It has persistent external gills and only the anterior pair of legs. The Gutenberg Webster's Unabridged Dictionary Section M, N, and O The tadpole is very small, and external gills are needed to keep it in very close contact with the water. Ontario Teachers' Manuals: Nature Study At the end of four weeks after it was first purchased the dorsal or upper surface of its external gills developed a small amount of dark pigment. The Project Gutenberg Encyclopedia Volume 1 of 28 In the ancestral reptiles external gills may have helped at first, until by the enlargement of the bladder they were rendered unnecessary. Hormones and Heredity Tom was very happy swimming about in the river, although he was now only about four inches long, with a set of external gills, just like those of an eft. The World's Greatest Books — Volume 05 — Fiction You have not been through the experience of starting to ask the girl you love to marry you and then suddenly finding yourself talking about the plumlike external gills of the newly-born newt. Right Ho, Jeeves Some aquatic crustaceans have the labor simplified by external gills, which hang down into the water, sometimes depending from the stomach, sometimes from the legs. The History of a Mouthful of Bread And its effect on the organization of men and animals |
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