NEETBotanyAnatomy of Flowering Plants
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Leaves of grasses curl inwards during severe water stress. Reason (R): During water stress, bulliform cells present on the adaxial epidermis become highly turgid, which makes the leaves curl inwards. In the light of the above statements, choose the most appropriate answer from the options given bel
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
C. (A) is correct but (R) is not correct
Step-by-step solution
Assertion (A) is correct because in grasses, leaves curl inwards during severe water stress to minimise water loss by reducing the exposed surface area. Reason (R) is incorrect because the inward curling of leaves is caused when the bulliform cells become flaccid due to water stress. When these cells absorb water and become turgid, the leaf surface is exposed, not curled. Answer: (A) is correct but (R) is not correct