Question

Which one of the following is not true about bulliform cells?

• A. Helps to minimize water loss
• B. They are colourless cells
• C. Present in abaxial epidermis
• D. They make the leaves curl inwards

Answer 1

Answer:

C. Present in abaxial epidermis

• Bulliform cells, also known as motor cells, are huge, bubble-shaped epidermal cells found on the top surface of leaves in groups of multiple monocots.

• These cells are found on the top or adaxial leaf surface.

• They are usually found at the midvein part of the leaf.

• These are large, white, and colorless cells.

  Functions of bulliform cells:

• In times of scarcity of water, the leaves curl up in order to reduce the evaporation process.

• During times of stress, bulliform cells assist in the rolling of leaves to avoid water loss through transpiration. As a result, they govern the process of transpiration.

• They also unfold the leaves when the conditions are right.