Assertion: A functional mammary gland is characteristic of all female mammals. Reason: The mammary glands are paired structures (breasts) that contain glandular tissue and variable amount of fat.

Assertion is true and reason is false. Both assertion and reason are false. Assertion and reason both are true ,but reason is not the correct explanation of assertion. Both assertion and reason are true.

Both assertion and reason are true.

A functional mammary gland is characteristic of all female mammals .The mammary glands are paired structures (breasts) that contain glandular tissue and variable amount of fat. The glandular tissue of each breast is divided into 15-20 mammary lobes containing clusters of cells called alveoli.