A plant hormone related with inhibition of Sensecene is
A
Ethylene
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B
ABA
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C
Bromic acid
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D
GA
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Solution
The correct option is D GA GA inhibits or slows down senescence by reducing the effect of ethylene, the senescence hormone.
GA when added delays degradation of chlorophyll in leaves and prevents inrolling of flower petals, which may occur due to greater ethylene concentrations. It reduces ethylene sensitivity of plant parts.