Question

Choose the correct combination of labelling :

• A. a - epidermal cells, b - subsdiary cells, c - chloroplast, d - stomatal aperture, e - guard cells
• B. a - epidermal cells, b - subsdiary cells, c - chloroplast, d - guard cells, e - stomatal aperture
• C. a - epidermal cells, b - guard cells, c - chloroplast, d - subsdiary cells, e - stomatal aperture
• D. a - subsdiary cells, b - epidermal cells, c - chloroplast, d - stomatal aperture, e - guard cells
• E. a - guard cells, b - epidermal cells, c - stomatal aperture, d - subsdiary cells, e - chloroplast

Answer 1

The correct option is B a - epidermal cells, b - subsdiary cells, c - chloroplast, d - guard cells, e - stomatal aperture

Stomata are tiny pore present on the epidermal layer of the leaves, which is meant for gaseous exchange called transpiration. Each stomatal apperture is guarded by a pair of pea-shaped specialized cells called chloroplast-containing guard cells, these are the cells which regulates the opening and closing of stomata. The guard cells are surrounded by subsidiary cells. The inner wall of guard cells is thick whereas the outer wall is thin in structure.

So, the correct answer is option B.