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Question

Avena coleoptile test detects the presence of 


A
IAA
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B
GA
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C
NAA
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D
BA
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Solution

The correct option is A IAA
Avena coleoptile test or Avena curvature test was developed by Frits Went to explain the curvature of coleoptile tips of germinating oat (Avena). He discovered the substance that is present in coleoptile tips and is responsible for the curvature of germinating oat coleoptiles. He called it as auxin. Chemically auxin is Indole Acetic Acid (IAA). He developed the Avena curvature test for determining the amount of auxin which is active in very small amount in Avena coleoptile tips.
So, the correct answer is 'IAA'.

Biology

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