Question

Which of the following combinations of plant hormones and their associated function are CORRECT? 
\[\begin{array}{c c} \textbf{Hormone} & \textbf{Function} \\ \text{P. Abscisic acid} & \text{Breaks seed dormancy} \\ \text{Q. Auxin} & \text{Induces cell division} \\ \text{R. Ethylene} & \text{Stimulates ripening of fruits} \\ \text{S. Gibberellin} & \text{Promotes seed dormancy} \\ \end{array}\]

• A. P and R only
• B. P and S only
• C. Q and R only
• D. Q and S only

Hint:

Remember: ABA induces dormancy, GA breaks dormancy, Auxin aids growth and division, and Ethylene ripens fruits.

Answer 1

The Correct Option is C

Let us evaluate each hormone–function pair:
P. Abscisic acid – "Breaks seed dormancy"
Incorrect. ABA actually induces seed dormancy and inhibits germination.
Q. Auxin – "Induces cell division"
Correct. Auxin promotes cell elongation and also stimulates cell division (with cytokinin).
R. Ethylene – "Stimulates ripening of fruits"
Correct. Ethylene is a well-known ripening hormone.
S. Gibberellin – "Promotes seed dormancy"
Incorrect. GA breaks seed dormancy and promotes germination.
Thus, only Q and R are correct.