Permanent Tissue · Botany

Which of the following is a function of the bulliform cells found in grass leaves?

  1. Conduction of water upward through the veins of the leaf blade
  2. Protection of the leaf against insect pests
  3. Contribution to secondary growth of the stem
  4. Rolling of leaves to reduce transpirational water loss
Show answer and explanation

Correct answer: Rolling of leaves to reduce transpirational water loss

Bulliform cells are large, bubble-shaped epidermal cells in grasses. During water stress, they lose turgidity, causing the leaf to roll inward to minimize surface area and water loss.

Difficulty: Medium Question 11 of 20

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