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Question Question 1(i)
Adrenaline is a 'stress hormone' found in humans similarly the 'stress hormone' of plant is
- ethylene
- abscisic acid
- cytokinins
- auxin
abscisic acid
Reason — Abscisic acid is the plant hormone that helps the plant to survive in unfavourable conditions. They cause closure of stomata and also inhibit growth.