✓ Board-verified↻ asked 2×
Science · 2023 · 1 mark
CBSE 2023 · Region 4 · Set 1 · Q9
Opening and closing of stomata is due to :
Official answer
From CBSE’s own marking scheme for this paper.
(B)
Movement of water in and out of the guard cells.
More from Life Processes
- Observe the figure given below and identify the incorrect step for the activity set-up:2026 · asked 3×
- (i) State the role of ATP in cellular respiration. (ii) What ensures sufficient exchange of gases in plants?…2023 · asked 3×
- Kidneys help to regulate the volume of fluid and various metabolites waste products in the body. Normally,…2026 · asked 3×
- (i) "The length of the small intestine in various animals depends on the food they eat." Justify the…2025 · asked 3×
- With the help of an activity, explain the action of saliva on the food we eat. Why is bile juice important in…2023 · asked 3×
- Secretion of less saliva in mouth will effect the conversion of:2025 · asked 3×
- Give the name of the enzyme present in the fluid in our mouth cavity. State the gland which produces it. What…2023 · asked 3×
- Which structure in a leaf is mainly responsible for gaseous exchange?2026 · asked 3×
CBSE Class 10 Science past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.