Home
Class 11
BIOLOGY
Assertion: In birds , the skin is moist....

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

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.

Text Solution

Verified by Experts

The correct Answer is:
d

The characteristic features of Aves (birds) are the presence of feathers and most of them can fly except flightless birds (e.g. Ostrich). Skin is dry without glands except the oil gland at the base of the tail.
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion : The air buble shines in water. Reason : Air bubble in water shines due to refraction of light.

Which structure helps the bird to change its direction flying in air?

Assertion and Reason. Mark the correct choice as : Assertion: We can live very happily if friction is not present in nature. Reason:Aeroplane shape is streamlined to reduce the affort of frictional force .

Assertion: Skin ofleech is kept moist and slimy. Reason : It is due to secretion of mucus which also prevents it from drying

Assertion:(A) Heena is a natural dye. Reason(R) It is got from plants causes no irritation to the skin .

Assertion:Air sacs are connected to lungs in Class Aves. Reason: Air sacs supplement respiration in birds.

Assertion : Over-exploitation of a species reduces the size of its population eventually leading to its extinction. Reason : Steller's sea cow is a large, herbivorous, terrestrial mammal which is on the verge of extinction due to over exploitation. (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.