Thanks to this helpful interactive quiz and printable worksheet, you can test your knowledge of amniotes and their evolutionary characteristics at. Fill in the blank with the word or phrase that best completes the sentence. Amniotes are a clade of tetrapod vertebrates comprising the reptiles, birds, and mammals. The origin of amniotes seems to have occurred early in the carboniferous and was part of a rapid diversification of tetrapods at this time3,5,6.
Sequencing three crocodilian genomes to illuminate the evolution of archosaurs and amniotes. General features of amniotes amniotic egg impermeable skin skin permeability varies, but in general the amniotes have thicker skin than amphibians and keratinized epidermis. Amniotes include synapsids mammals along with their extinct kin and sauropsids reptiles and birds, as well as their ancestors, back to amphibians. Amniotes from greek amnion, membrane surrounding the fetus, earlier bowl in which the blood of sacrificed animals was caught, from amnos, lamb are a clade of tetrapod vertebrates comprising the reptiles, birds, and mammals that lay their eggs on land or retain the fertilized egg within the mother. Amniotes are characterized by having an egg equipped with an amnion, an adaptation to lay eggs on land or retain the fertilized egg within the mother. A lizards legs stick out on either side of its body. Section 1 amniotes vs nonamniotes etc zoology zoo4316. Amniotes differ from amphibians by a their size b possession of lungs c from biology bio120 at post university. Other stem amniotes may have had amniotic eggs, although they are not classified as amniotes. Holt mcdougal biology 3 a closer look at amniotes study guide a section 1. Amniotes biodiversity research and teaching collections.
Muscles around the ribs help propel the body forward, and their con tractions make the lizards body sway from side to side with each step. Sequencing three crocodilian genomes to illuminate the. This copy is for your personal, noncommercial use only. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Some of the localities visited by the project paleoangola team between 2005 and 2010. The first amniotes walked in a sprawl similar to that of the lizard in figure 1. Amphibians use skin in respiration, maybe this is why. Amniotes study guide a key concept reptiles, birds, and mammals are amniotes. Section 1 amniotes vs non amniotes etc zoology zoo4316 with mott at kentucky wesleyan college. Study 29 section 1 amniotes vs non amniotes etc flashcards from becca e. Amniote embryos, whether laid as eggs or carried by the female, are protected and aided by several extensive membranes. Amniote definition, any vertebrate of the group amniota, comprising the reptiles, birds, and mammals, characterized by having an amnion during the embryonic stage.
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