Question

Kidney-shaped cells forming the stomata are:

• A. Guard cells
• B. Collenchyma
• C. Epidermal cells
• D. Dumbbell cells

Answer 1

The correct option is A

Guard cells

The correct option is A.

Explanation of the correct option:

1. Stomata are tiny pores or openings on the green parts of a plant, especially the leaves.
2. They enable gaseous exchange through them.
3. They also are responsible for transpiration to occur in plants.
4. Stomata are surrounded by kidney-shaped guard cells, which regulate and control their opening and closing.

Explanation of the incorrect options:

Option B:

Collenchyma is a simple permanent tissue responsible for providing flexibility to the plant.

Option C:

Epidermal cells are present as the outermost layer of cells in a plant. It is not responsible for stomata formation.

Option D:

Dumbbell cells are a type of guard cells. They look like dumbbells.

Final answer: Kidney-shaped cells forming the stomata are guard cells.