Transport In Plants Question 20

Question: Mesophyll tissue of leaf is at water potential of -10.0 bars while epidermal cells of leaf have water potential of-8.0 bars and the air outside has water potential of -5.0 bars. Water will move from:

Options:

A) Air $ \to $ epidermis $ \to $ mesophyll

B) Mesophyll $ \to $ air $ \to $ epidermis

C) Mesophyll $ \to $ epidermis $ \to $ air

D) Water will not move.

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Answer:

Correct Answer: A

Solution:

[a] Water potential is highest in air & lowest in mesophyll.