Question

Given below is the diagram of a stomatal apparatus. In which of the following all the four parts labeled as A, B, C, and D are correctly identified?

• A. (A)-Epidermal cell, (B)-Subsidiary cell, (C)-Guard cell, (D)-Stomatal aperture
• B. (A)-Guard cell, (B)-Stomatal aperture, (C)-Subsidiary cell, (D)-Epidermal cell
  
• C. (A)-Epidermal cell, (B)-Guard cell, (C)-Stomatal aperture, (D)-Subsidiary cell
• D. (A)-Epidermal cell, (B)-Subsidiary cell, (C)-Stomatal aperture, (D)-Guard cell

Answer 1

The correct option is A (A)-Epidermal cell, (B)-Subsidiary cell, (C)-Guard cell, (D)-Stomatal aperture

Stomata are tiny openings or pores in plant tissue that allow for gas exchange. Specialized cells known as guard cells surround stomata and function to open and close stomatal pores. Subsidiary cells are the accessory cells to guard cells in the epidermis of plants.

So, the correct option is '(A) Epidermal cell (B) Subsidiary cell (C) Stomatal aperture (D) Guard cell'.