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NEET 2019
Exam
NEET
Year
2019
Subject
Botany
Chapter
Anatomy of Flowering Plants

NEET 2019 · Botany · Anatomy of Flowering Plants

Grass leaves curl inwards during very dry weather. Select the most...

Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following.

Options

  1. AClosure of stomata
  2. BFlaccidity of bulliform cells
  3. CShrinkage of air spaces in spongy mesophyll
  4. DTyloses in vessels

Correct answer

B. Flaccidity of bulliform cells

Step-by-step solution

Bulliform cells are large, bubble-shaped epidermal cells that occur in groups on the upper surface of the monocot leaves. These cells are present on the upper surface of the leaf. They are generally present near the midvein. These are responsible for the curling of leaves in monocots.
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