Question

Choose the right option based on the diagram: 1) Stomatal aperture, 2) Guard cells, 3) Subsidiary cells, 4) Chloroplast

• A. A-1, B-2, C-3, D-4
• B. A-2, B-3, C-1
• C. A-3, B-1, C-2
• D. A-2, B-1, C-3

Hint:

\[ \boxed{\text{Guard cells are kidney-shaped and contain chloroplasts}} \]

Answer 1

The Correct Option is A

A stoma consists of two kidney-shaped guard cells that contain chloroplasts and regulate the size of the stomatal aperture (pore) through changes in turgor pressure. Subsidiary cells surround the guard cells and assist in their movement, while the stomatal aperture is the channel through which gaseous exchange and transpiration take place.