WAEC Biology 2009 Objective — Question 8
Question 8 of 60 from the West African Examinations Council (WAEC) Biology 2009 Objective paper, with the correct answer and a full explanation.
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The mechanism of opening and closing of stomata in plants is based on
- A. A. turgidity and diffusion
- B. B. turgidity and flaccidityCorrect
- C. C. osmosis and diffusion
- D. D. osmosis and turgidity
Explanation
The stoma opens when the guard cell is turgid and closes when the guard cell is flaccid.
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