Question

Bulliform cells are responsible for

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

Answer 1

The Correct Option is A

Bulliform cells, specialized epidermal cells in monocot leaves (especially grasses), regulate water loss and leaf movement. Their function is detailed below:

1. Location: Found in groups on the adaxial (upper) epidermis of leaves.
2. Water Storage: These large cells store significant water and maintain turgor when hydrated.
3. Leaf Folding: Under water stress or heat, they lose turgor, causing the leaf to fold or roll inward, thereby reducing surface area and transpiration.
4. Monocot Adaptation: This inward curling is a key survival mechanism for monocots in arid environments, conserving water.

Based on the provided options, the statement "Inward curling of leaves in monocots" accurately describes the function of bulliform cells. The other options are incorrect:

Option	Analysis
Protecting the plant from salt stress	This function is not attributed to bulliform cells.
Increased photosynthesis in monocots	Bulliform cells do not directly enhance photosynthesis, though water conservation indirectly supports it.
Providing large spaces for storage of sugars	These cells are not involved in sugar storage.