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Question
Leaf fall starts, when the amount of _________ decreases.
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Solution
AuxinThe shedding of leaves is termed as abscission. Auxin prevents leaf abscission by maintaining cells in the abscission zone insensitive to ethylene. When auxin levels in the leaf decline, the tissue becomes sensitive to ethylene that promotes abscission.
Auxin
The shedding of leaves is termed as abscission. Auxin prevents leaf abscission by maintaining cells in the abscission zone insensitive to ethylene. When auxin levels in the leaf decline, the tissue becomes sensitive to ethylene that promotes abscission.
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