Q1121
In plants, exchange of gases takes place through
A.
Stomata
AnswerB.
Palisade tissue
C.
Spongy tissue
D.
Mid rib
Answer: Option A
Solution
Answer: Option A
Solution:
The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapour in transpiration) occurs through pores called stomata (singular = stoma). Normally stomata open when the light strikes the leaf in the morning and close during the night.