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Question

What controls the opening and closing of stomata?


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Solution

Stomata:

  1. Stomata are specialized apertures in the epidermis of plant cells.
  2. They play an important role in the exchange of carbon dioxide and oxygen in plants.

Regulation of stomata:

  1. The opening and closing of stomata are controlled by specialized cells called guard cells.
  2. The turgor pressure in the guard cells controls the opening and closing of the guard cells.
  3. Stomatal pores open when guard cells enlarge as a result of water absorption and close when guard cells shrink.
  4. The opening and closing of stomata will also depend on factors such as light, temperature, carbon dioxide, and humidity.

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