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The opening and closing of the stomatal pores depends upon
  • a)
    Oxygen
  • b)
    Temperature
  • c)
    Water in guard cell
  • d)
    Concentration of CO2 in stomata
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The opening and closing of the stomatal pores depends upona)Oxygenb)Te...
The opening of guard cells is facilitated by the entry of water inside guard cells. This makes the guard cell turgid. The closing of guard cells is facilitated by water coming out of guard cells. This will make the guard cells flaccid.
  • The opening and closing of stomata depend on the turgor pressure, caused by the osmotic flow of water in the guard cells.
  • When the guard cells are turgid, they expand resulting in the opening of stomata.
  • When the guard cells lose water, they become flaccid leading to stomatal closure.
  • Stomata normally open when the light strikes the leaf and close during the night.
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