Assertion The cells of endothecium develop fibrous thickenings of cellulose.
Reason The endothecium is hygroscopic in nature.

Options

A. Both Assertion and Reson ae true and Reason is the correct explanation of Assertion
B. Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion
C. Assertion is true, but Reason is false
D. Assertion is false, but Reason are false

Answer

A

Explanation

Anther wall of mature anther consists of epidermis (outermost layer), followed by endothecium then one of three middle layers and an innermost tapetum layer. The cells of endothecium are radially elongated and at maturity develop, fibrous thickenings of cellulose and thus, hygroscopic in nature. Endothecium attains its maximum development when the anther is ready for dehiscene. This hygroscopic nature of endothecial cells helps in the dehiscence of anther.