Campbell Biology: Concepts & Connections (9th Edition)
Campbell Biology: Concepts & Connections (9th Edition)
9th Edition
ISBN: 9780134296012
Author: Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan, Jane B. Reece
Publisher: PEARSON
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Chapter 19, Problem 11TYK

Birds and mammals are both endothermic, and both have four-chambered hearts. Most reptiles are ectothermic and have three-chambered hearts. Why don’t biologists group birds with mammals? Why do most biologists now consider birds to be reptiles?

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Birds and mammals are both endothermic, and both have four chambered hearts. Most reptiles are ectothermic and have three-chambered hearts. a) Why won’t biologists group birds with mammals? b) Why do most biologists now consider birds to be reptiles?
Birds and mammals are both endothermic, and both have four-chambered hearts. Most reptiles are ectothermic and have three-chambered hearts.  Why won’t biologists group birds with mammals?
The phylum Chordata only contains vertebrate species.   Question 4 options:   True   False   Which of the following is NOT true about reptiles and birds?   Question 16 options:   Reptiles are cold-blooded, whereas birds are warm blooded.   Both reptiles and birds live exclusively on land.   Both reptiles and birds lay eggs.   Both reptiles and birds breath through lungs.     In addition to a spinal column, what key feature distinguishes members of Vertebrata from Chordata?   Question 21 options:   Quadripedal Locomotion   Hardened Endoskeleton   The Notochord   Body Hair   The two main groups of vertebrates include:   Question 19 options:   Non-Bird Reptiles/Birds and Mammals   Mammals and Amphibians   Monotremes and Marsupials   Fish and Tetrapods

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