AIIMS2018Zoology-Biology
AIIMS 2018 Zoology Biology MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Choose the correct match:
A
Aves - Pneumatic bones
B
Reptiles - 4 chambers heart
C
Amphibia - Scales on body
D
Osteichytes - Perisistant notochord
Correct Answer
Option A
Detailed Explanation
The correct answer is A) Aves - Pneumatic bones because birds (Aves) are characterized by having pneumatic bones, which are lightweight and contain air sacs that aid in flight. In contrast, reptiles typically have a three-chambered heart (except for some like crocodiles), amphibians do not have scales, and osteichthyes (bony fish) have a developed skeleton rather than a persistent notochord.
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