Assertion : Birds have one ovary.
Reason : This reduces the body weight for flight.

Assertion : Birds have penumatic bones. Reason : Birds reduce their body weight for normal flight.

These questions consist of two statement each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is a correct explanation of the Assertion. B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion: Birds have pneumatic bones. Reason: Birds reduce their body weight for normal flight

Assertion.Avianbones are pneumatic. Reason. This makes body light for flight in the air.

Assertion : Birds are with pneumatic bones. Reason : Air sacs make the bones lighter which helps in the flight of the birds.

A: Birds have pneumatic Bones R: To reduce body weight for flying in the air (A) A and R both are correct and R is correct explanation of A. (B) A and R are correct but R is not explanation of A. (C) A is correct and R is false. (D) A and R are false

Assertion : Birds have no mammary gland. Reason : Pigeonds secrets 'pigeon's millk'

Assertion (A) : Angiosperms have ovary in the flower. Reason (R) : They produce fruits and seeds.

Assertion Telogonic is a condition of ovary Reason The telogonic gonad is found in Ascaris.