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What is the function of subsidiary cells?
Question

What is the function of subsidiary cells?

A.

Secretion of enzymes for nutrient acquisition, defence and digestion

B.

Transport of food through phloem

C.

Support of guard cells in stomatal function

D.

Absorption of light for photosynthesis

Correct option is C

Correct Answer: C: Support of guard cells in stomatal function

Explanation:

  • Subsidiary cells are specialized cells found around the guard cells in the stomata of plants. They support the function of the guard cells, which control the opening and closing of the stomatal pores.
  • The guard cells regulate gas exchange and water loss in plants, while the subsidiary cells help maintain the structure and function of the stomata, providing support in the process of stomatal movement.

Information Booster:

  • Guard cells and subsidiary cells: Guard cells control the stomatal opening by taking up water, causing them to swell and open the pore. The subsidiary cells help in this process by contributing to the turgor pressure and aiding in the movement of guard cells.

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