Adaptations of Vertebrates — NEET Biology
📚 Practice Concept📖 NCERT Source
Limbs are absent in snakes. Fishes, amphibians and reptiles are poikilothermus (cold-blooded). Aves are warm-blooded animals with feathers on their bodies and forelimbs modified into wings for flying. Hind limbs are adapted for walking, swimming, perching or clasping. The unique features of mammals are the presence of mammary glands and hairs on the skin. They commonly exhibit viviparity.
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Why do birds need a lightweight endoskeleton?
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