Assertion : The endoskeleton of the birds is such that it makes the body of the birds light weight.
Reason : Most of the bones in a bird's body are hollow and light.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer

A

Explanation

Birds possess specific features that help them to fly in air. Most of the bones in a bird.s body are hollow and light. Their bones are short and ar fused to decrease body weight. This makes the endoskeleton and hence its body weight light so that the bird can easily fly in air.