Assertion: Cow, sheep and rats are non-primate mammals exhibiting oestrous cycle.
Reason: Deer, dog and tiger are primate mammals exhibiting menstrual cycle.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer

C

Explanation

• The females of placental mammals exhibit cyclical changes in the activities of ovary and accessory ducts as well as hormones during the reproductive phases.
• In non-primate mammals like cows, sheep, rats, deers, dogs, tiger etc., cyclical changes during reproduction are called oestrus cycle where as in primates (monkeys, apes, and humans) it is called menstrual cycle.