NEET Previous Year Question
Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly-cut coleoptile stumps. Of what significance is experiment ?
Topic: NEET PYQ
Answer: B. Full step-by-step solution below.
- AIt made possible the isolation and exact identification of auxin.
- BIt is the basis for quantitative determination of small amounts of growth-promoting substances.
- CIt supports the hypothesis that IAA is auxin.
- DIt demonstrated polar movement of auxins.
Correct answer: B
Solution
(b) F. W. Went's Avena coleoptile experiment showed that the substance (auxin) from the tip could cause curvature. This became the basis for bioassay and quantitative measurement of auxin.More Plant Growth & Development PYQs
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