Home
Class 11
BIOLOGY
Assertion : Birds have one ovary. Reas...

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

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
A
Birds have many adaptations for flight. They have pneumatic bones and only one ovary which reduces the body weight.
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion : Birds have penumatic 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.

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

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

Assertion : For a floating body to be in stable equilibrium, its centre of buoyancy must be located above the centre of gravity. Reason : The torque produced by the weight of the body and the upthrust will restore body back to its normal position, after the body is disturbed.

Assertion: Gymnosperms seeds are naked. Reason: They lack ovary wall.

Assertion: In birds , the skin is moist. Reason: Moist skin of birds reduces effects of friction due to flying in air.