NEET · Biology · STD 11 - 6. Anatomy flowering plants

Bulliform cells are responsible for

A Protecting the plant from salt stress.
B Increased photosynthesis in monocots.
C Providing large spaces for storage of sugars.
D Inward curling of leaves in monocots.

Verified Solution

Answer & Solution

Correct Answer

(D) Inward curling of leaves in monocots.

Step-by-step Solution

Detailed explanation

In grasses, certain adaxial epidermal cells along the veins modify themselves into large, empty, colourless cells. These are called bulliform cells. When the bulliform cells in the leaves have absorbed water and are turgid, the leaf surface is exposed. When they are flaccid due to water stress, they make the leaves curl inwards to minimise water loss.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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