A hormone that prevents senescence in leaves, is:
Correct answer: C. Cytokinin
- A. Auxin
- B. Gibberellins
- C. Cytokinin
- D. Abscisic acid
Explanation
Leaf senescence is a degenerative process among which cellular organelles and biomolecules are broken down and resultant catabolites are mobilized to sink tissues such as reproductive organs and new leaves. Cytokinins help to maintain the plant cells and expression of cytokinin biosynthesis genes late in development prevents leaf senescence. Hence the answer is C.
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