Directions: Choose the correct option:
Assertion (A): Guttation occurs throughout the day in plants.
Reason (R): Stomata have guard cells that open and close and help in transpiration.

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Solution

The correct option is (d) : A is false and R is true.

Guttation mainly occurs during night time, but at times in areas with high humidity guttation occurs during day time. Stomata have guard cells which open and close and help in regulating transpiration.

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Similar questions

What causes the opening and closing of guard cells of stomata during transpiration?

(A) Scotoactive stomata	(i) Opening and closing of photoactive stomata
(B) Guttation	(ii) Transpiration
(C)Tensile strength	(iii) Water loss in liquid phase
(D) K $^{+}$ pump theory	(iv) Night transpiration

Match the above columns and choose the correct combination.

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