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Question
Which plant hormone is responsible for fall of senescent leaves?
Which plant hormone is responsible for fall of senescent leaves?
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Solution
The correct option is B Abscisic acid
- Abscisic acid is a plant hormone discovered for its role in regulating abscission(the natural detachment of parts of a plant, typically dead leaves and ripe fruit) and dormancy.
- Abscisic acid is especially important for plants in the response to environmental stresses, including drought, soil salinity, cold tolerance, freezing tolerance, heat stress, and heavy metal ion tolerance. It promotes closure of stomata and fall of senescent leaves.
- Hence plant hormone is responsible for the fall of senescent leaves is Abscisic acid.
- So, the correct answer is 'Abscisic acid'.
- Abscisic acid is a plant hormone discovered for its role in regulating abscission(the natural detachment of parts of a plant, typically dead leaves and ripe fruit) and dormancy.
- Abscisic acid is especially important for plants in the response to environmental stresses, including drought, soil salinity, cold tolerance, freezing tolerance, heat stress, and heavy metal ion tolerance. It promotes closure of stomata and fall of senescent leaves.
- Hence plant hormone is responsible for the fall of senescent leaves is Abscisic acid.
- So, the correct answer is 'Abscisic acid'.
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