NEET · BiologyHard
Which of the following features is characteristic of the bulliform cells found in the leaves of many monocots?
- A.They are thick-walled, lignified cells that provide mechanical support
- B.They are large, empty, colorless cells that help in leaf rolling under water stress
- C.They are specialized guard cells involved in gas exchange
- D.They are responsible for the synthesis of secondary metabolites
Show correct answer & step-by-step solution
Correct answer: B — They are large, empty, colorless cells that help in leaf rolling under water stress
Solution
- Bulliform cells are modified epidermal cells found in the adaxial epidermis of monocot leaves.
- These cells are large, thin-walled, and contain large vacuoles.
- When water availability is low, these cells lose turgor pressure.
- The loss of turgor causes the leaf to roll inward to reduce transpiration.
- Hence the answer is (B).
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