MCQ
Guard cells:
  • A
    Regulate the closing of stomata
  • Regulate the opening and closing of stomata
  • C
    Regulate the opening of stomata
  • D
    Regulate the process of photosynthesis

Answer

Correct option: B.
Regulate the opening and closing of stomata
(b) Regulate the opening and closing of stomata
Explanation :
Guard cells are specialised cells in the epidermis of leaves and stems. They function to control the opening and closing of stomata. By adjusting the size of these openings, guard cells regulate gas exchange and water loss in plants.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free