Question

The shape of guard cells changes due to the change in the

• A. protein composition of cells
• B. temperature of cells
• C. amount of water in cells
• D. position of the nucleus in the cells

Answer 1

The correct option is C

amount of water in cells

The correct option is C.

Explanation of the correct option:

1. Stomata are the microscopic holes found in the epidermis of leaves.
2. The stomatal apparatus is made up of a hole termed a stoma that is surrounded on the outside by kidney-shaped guard cells.
3. Stomatal motions are the opening and closure of the stomatal hole.
4. Water in guard cells regulates stomatal pore opening and shutting.
5. This movement is triggered by the entry or escape of water from guard cells.
6. Stomatal motions are the opening and closure of the stomatal hole.

Final answer: The shape of guard cells changes due to changes in the amount of water in cells.