Question

Assertion : Birds have one ovary
Reason: This reduces the body
weight for flight
O a) 1
Ob) 2
O c) 3
O d) 4​

Answer 1

Answer:

Assertion is correct, as birds have only one ovary (the left one), which connected to an oviduct although two ovaries are present in the embryonic stage of each female bird.

Reason is also correct and correct explanation for Assertion, as birds have only left ovary, which is an adaptation to reduce the weight for flight, which according to scientists took place early in avian evolution.

Therefore, the correct answer is option A.