A water molecule could move all the way through a plant from soil to root to leaf to air and pass through a living cell only once. This living cell would be a part of which structure?
A) the Casparian strip
B) a guard cell
C) the root epidermis
D) the endodermis
E) the root cortex

Question

Quizplus · Accepted Answer

The endodermis is the innermost layer of cells in the root cortex and is responsible for regulating the movement of water and nutrients into the plant. It contains the Casparian strip, which acts as a selective barrier forcing water and nutrients to move through living cells rather than around them. Therefore, the water molecule would have to pass through a living cell in the endodermis in order to move through the plant.

A Water Molecule Could Move All the Way Through a Plant