Question

. The symplast pathway is most easily disrupted when
A. Water transport channels in the plasma membrane of the root hair cells malfunction
B. Water transport channels in the plasma membrane of the root cortex malfunction
C. Water transport channels in the plasma membrane of the root endodermis malfunction
D. Water transport channels in the plasma membrane of the guard cells malfunction

Answer 1

The symplast is basically the inner area of the plant where the water molecules can be easily diffused and there the direct flow of small molecules such as sugar or ions in between the cells.

The answer to this query is option (A) Water Transport channels in the plasma membrane of the root hair cells malfunction. 

Answer 2

Answer is C

Explanation:

As water transport take place mostly through Apoplast in root hair (due to less resistance by cortical cells) so malfunction of water transport channel in plasma membrane wouldn't affect it that much, but through Endodermis only Symplastic pathway take place (due to presence of Casparian strip in Apoplast's pathway) So the malfunction of water channels in plasma membrane of Endodermis will disrupt the whole transport.

Hope it's ok