Assertion : Water and mineral uptake by root hairs from the soil occure through apoplast until it reaches endodermis
Reason : Casparian strips in endodermis are suberized.

Options

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

Answer

A

Explanation

The apoplastic pathway involves the movement of minerals by simple diffusion from cell to cell through their primary cell wall. Minerals moves through apoplast in cortex and pericycle but not in endodermis. The cell walls of endodermal cells possess a conspicuous waxy thickening the Casparian strip which blocks the passage of solute from one side of the endodermis to the other via this cell wall route.