Q. Which of the following is a type of plant hormone that promotes cell elongation?

निम्नलिखित में से कौन सा एक प्रकार का पादप हार्मोन है जो कोशिका वृद्धि को बढ़ावा देता है?

A
Auxin
औक्सिन
B
Gibberellin
गिबरेलिन
C
Cytokinin
साइटोकिनिन
D
Ethylene
ईथीलीन

Explanation

Auxin is a plant hormone responsible for cell elongation, especially in shoots.
It plays a key role in phototropism (growth toward light) and gravitropism (growth in response to gravity).

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