Question
Define senescence. How is it regulated in plants?
Answer :
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Senescence is the genetically programmed process of aging that leads to the gradual decline of cellular, tissue, or organ function and ultimately results in death. In plants, senescence is not merely a degenerative event but a highly regulated physiological process that plays an important role in growth, development, and survival by reallocating nutrients from older tissues to actively growing or storage organs such as seeds, fruits, and young leaves. Regulation of senescence in plants occurs at hormonal,
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