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Assertion : Some female animals permit c...

Assertion : Some female animals permit copulation only during oestrous cycle.
Reason : Oestrous cycle is observed in non-primate mammals.

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:
b
In females of placental mammals, there are cyclical changes in ovaries, accessory reproductive ducts and hormones during the reproductive phase. In non-primate mammals like cows, sheep, rats, deer, dogs, tiger, etc., such cyclical changes during reproduction are called oestrous cycle. It consists of a short period of oestrous or heat (e.g., 12-24 hours in cow) followed by anoestrous or passive period. Sex urge is increased and the female permits copulation only during oestrous period.
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