Which of the following is a CORRECT statement?

Zeatin is isolated from corn kernels

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GA's discovered first in plants

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Ethylene is strictly a plant growth inhinitor

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Robert Hooke isolated auxins

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Solution

The correct option is A
Zeatin is isolated from corn kernels

Zeatin is isolated from corn kernels. GA was first discovered in fungi. Ethylene is a gaseous hormone which plays an essential role in a myriad of plant developmental processes, both by stimulation and inhibition of growth. Auxins were the first plant hormones discovered. Charles Darwin was among the first scientists to dabble in plant hormone research.

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