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Question

A substance which is used to stimulate the increase in size of the apple fruit is

A
Morphactin
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B
Promalin
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C
Ethylene
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D
Ethapone
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Solution

The correct option is B Promalin
Promalin is a mixture of cytokinin-6-benzaldenine, GA4 and GA7. It is very active in stimulating increase in apple size particularly in red delicious apples.

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