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Question

Who speculated for the first time the presence of organ forming substances in the plant now called as hormones?

A
Darwin
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B
Went
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C
Yabuta
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D
Sachs
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Solution

The correct option is C Sachs
A hormone is defined as naturally occurring substance that at low concentration exerts a profound influence on a physiological process. Julius Von Sachs for the first time speculated the presence of organ forming substances in the plant now called as hormones.
So, the correct answer is option D.

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