Multiple choice

Which of the following is the most likely cause for wider opening of stomata?

  1. When the atmosphere is less saturated.

  2. When suction of salt molecules by adjacent guard cells takes place.

  3. When water molecules enter the guard cells.

  4. When the night temperature falls.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The widening of stomatal pores is due to the presence of water content in excess in a plant.

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