passwella.
Menu

WAEC Biology 2010 Question 8

Question 8

Cell and Its Environment

The mechanism of opening and closing of stomata in plants is based on

  1. A.turgidity and diffusion.
  2. B.turgidity and flaccidity.
  3. C.osmosis and diffusion.
  4. D.diffusion and flaccidity.
Show the answer and explanation

Answer: B (turgidity and flaccidity.)

Explanation

When guard cells become turgid the pore opens; when they become flaccid it closes.