OBJECTIVE LIFE SCIENCE
ANIMAL PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True or false? The only two endothermic taxa, mammals and birds, arose from different reptilian ancestors.
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -But the underlying similarities of these homologous bones reveal that all these animals share a common ancestor: a four-legged animal–a tetrapod–living over 365 million years ago.
Detailed explanation-2: -Birds and mammals are both endotherms, and these two groups have evolved endothermy independently. While most reptiles are ecotherms, there are some exceptions. Not all reptiles are strictly endothermic or ectothermic. There are species with an intermediate ability to control body temperature internally.
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