NEETBotanyAnimal Kingdom
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In Columba , the long bones are hollow with air cavities and air sacs are connected to the lungs. Reason (R): Pneumatic bones reduce body weight and air sacs supplement respiration to meet the high energy demands of flight. In the light of the above statements, choose the most appropriate answer fr
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
Step-by-step solution
Columba (Pigeon) belongs to the class Aves. Assertion (A) is correct: Birds possess a fully ossified endoskeleton where the long bones are hollow with air cavities (pneumatic bones). Additionally, they have air sacs connected to their lungs. Reason (R) is also correct and explains the Assertion: These anatomical features are crucial flight adaptations. Pneumatic bones make the body lighter, while air sacs supplement respiration to provide the high amount of oxygen required for the energy-intensive process of flight