NEET 2016 Phase 1 · BiologyVertebrate gridPrevious Year Question
Which one of the following characteristics is not shared by birds and mammals?
Answer: (C) Viviparity. Answer: Viviparity is not shared by birds and mammals.
- A.Ossified endoskeleton
- B.Breathing using lungs
- C.Viviparity✓
- D.Warm blooded nature
Correct Answer
(C) Viviparity
Solution & Explanation
Answer: Viviparity is not shared by birds and mammals. Solution: Birds (Aves) are oviparous, whereas most mammals are viviparous, so viviparity is not a shared feature. Both groups do share an ossified skeleton, lung breathing and a warm-blooded (homoiothermous) nature. NCERT Reference: Page 50, lines 3-4 (Aves oviparous); Page 51, line 7 (Mammals viviparous)
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