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Question

Cytokinins are generally

A
Acids
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B
Aminopurines
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C
Phenols
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D
Glucosides
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Solution

The correct option is B Aminopurines
The first cytokinin discovered was an aminopurine derivative named kinetin. Except zeatin which is adenine derivative, all other present cytokinins are aminopurines. All the naturally occurring cytokinins are substituted purines, in which sixth carbon is substituted by amino group.
Thus, the correct answer is option B.

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