What controls the opening and closing of stomata?


Stomata are the specialized pores or openings present in the epidermis of plant cells, which play a crucial role in gaseous exchange during the process of photosynthesis. Guard cells control the opening and closing of stomata.

  • The turgor pressure, which is caused by the osmotic flow of water in the guard cells, controls the opening and closing of stomata.
  • When the guard cells become turgid, they expand, causing stomata to open. Guard cells become flaccid as they lose water, causing stomatal closure.
  • Stomata usually open when the leaf is exposed to light and close at night.

Was this answer helpful?


4 (19)


Choose An Option That Best Describes Your Problem

Thank you. Your Feedback will Help us Serve you better.

Leave a Comment

Your Mobile number and Email id will not be published. Required fields are marked *




Free Class