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  4. Avena curvature test is a bioassay for examining the activity of

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Q. Avena curvature test is a bioassay for examining the activity of

AIIMSAIIMS 2006Plant Growth and Development

Solution:

Measurement of the effect of a known or suspected biologically active substance on living material is called as bioassay. Avena curvature test was first time performed by Went for measuring the activity of auxin hormone. This technique is effective for IAA concentrations of about $.02$ to $0.2\, mg\, L ^{-1}$.