Class 11 · Animal Kingdom

Avian Adaptations for Flight — NEET Biology

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What are the modifications that are observed in birds that help them fly?

NCERT Biology · Class 11 · Chapter 4 · Paragraph 79
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Assertion (A): Vertebrates show different reproductive strategies. Reason (R): Birds are viviparous while mammals are mostly oviparous.

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Correct answer: C If assertion is true but reason is false.

NCERT confirms different reproductive strategies exist (Assertion true). However, NCERT states “They are mostly oviparous” for birds and “They are viviparous with few exceptions” for mammals. The Reason swaps these - birds are oviparous (lay eggs), mammals are viviparous (live birth).

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What are the modifications that are observed in birds that help them fly?
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Which chapter is this from?
Animal Kingdom, Class 11 NCERT Biology.

Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.

176/180
of the ReNEET 2026 paper (all subjects) was already in the MedicNEET question bank

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