While conducting an experiment on plant hormones a student found that on using a particular hormone abscission of leaves, senescence, cell division and growth was observed. Which hormone do you think was used on the plants?
A
Auxin
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B
Ethylene
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C
Abscisic acid
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D
Cytokinin
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Solution
The correct option is B Ethylene Ethylene is considered as a plant growth promoter as well as a plant growth inhibitor. It promotes abscission of leaves, senescence in plants. It also promotes cell division and growth in plants.
Auxin is a plant growth promoter. It prevents abscission in plants. It promotes growth of root and shoot apex called apical dominance.
Abscisic acid is a plant growth inhibitor. It promotes abscission of leaves, and senescence but it inhibits cell division and growth in plants.
Cytokinin is a plant growth promoter that helps in rapid cell division but prevents senescence.