Which of the following is the function of guard cells?

Permanent tissue

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Meristematic tissue

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Connective tissue

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None of these

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Solution

The correct option is A
Permanent tissue

Guard cells are kidney-shaped cells present in stomata. They contain chloroplasts and mitochondria and control the opening and closing of the stomata. When the plant has an excess of water, the guard cells swell and create an opening for the water to go out or transpire. In dry conditions, the guard cells are flat and keep the stomata closed preventing loss of water.

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Similar questions

With respect to the given assertion and reason, choose the correct option.
Assertion (A): The process in which meristematic cells attain permanent shape, size and function is called differentiation.
Reason (R): Cells of meristematic tissue differentiate to form different types of permanent tissue.

Q. Assertion :Permanent tissue is composed of mature cells. Reason: Meristematic tissue is a group of actively dividing cells.

__ (Meristematic / Permanent) tissue can multiply to produce new cells.

Which of the following criteria is used to categorise plant tissues into meristematic and permanent tissue?

Distinguish between

(I) Meristematic tissue and Permanent tissue

(II) Simple permanent tissue and Complex permanent tissue

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