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Question

Auxin was first isolated from

A
Human urine
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B
Callus
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C
Coconut milk
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D
None
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Solution

The correct option is A Human urine
Dutch botanist Fritz W. Went first discovered auxin in the tip of oat coleoptiles in a gelatin block. Following Went's success, auxin, indole-3-acetic acid (IAA) was then isolated first from human urine

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