Question

The component of stomatal apparatus are

• A. Stomata and guard cells
• B. Guard cells
• C. Stomata and chloroplasts
• D. Stomata, guard cells and accessory cells

Answer 1

The correct option is D

Stomata, guard cells and accessory cells

The correct option is D.

Explanation for the Correct Option:

• The stomatal apparatus includes the porous opening called stomata, the cells around the stomata called guard cells, and the accessory cells surrounding the guard cells.
• The surrounding guard and accessory cells help open or close the stomata.
• The stomatal apparatus is involved in exchanging carbon dioxide and oxygen between plants and the atmosphere.
• It also functions in removing the water molecule from plants during transpiration.

Explanation for Incorrect Options:

Option A:

• The stomatal apparatus also contains accessory cells.

Option B:

• The components of the stomatal apparatus also include stomata and accessory cells.

Option C:

• The stomatal apparatus involves guard cells, accessory cells, and stomata as its components, not chloroplasts.

Therefore, the components of the stomatal apparatus are stomata, guard cells, and accessory cells.