NEET Biology Plant Growth And Development Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation

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Plant Growth And Development Topic Based

Question & Answer Discuss:

The Avena curvature is used for bioassay of

(a) ethylene

(b) IAA

(c) ABA

(d) $GA_3$

Answer: (b)

Avena curvature test is a test based on the experiments of Went (1928) which can measure auxin upto 300 mg/litre. Indole 3-acetic acid (IAA) is a universal natural auxin and Avena curvature test serves as an accurate bioassay for this plant hormone.

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