Question

The pathway of the movement of water through the cell wall and intercellular space only is called

• A. Plasmodesmata pathway
• B. Vacuolar pathway
• C. Symplast pathway
• D. Apoplast pathway

Answer 1

The correct option is D

Apoplast pathway

Apoplast and symplast are the two routes by which the water travels from root hair cells to the xylem of the root. In the apoplastic route, water moves through the cell walls and the intracellular spaces of the root cortex. In symplastic route, water moves through the protoplasts of the root cortex.

The main difference between apoplast and symplast is that apoplast is a fully permeable route in which the water movement occurs by passive diffusion whereas symplast is a selectively permeable route in which the water movement occurs by osmosis.