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Solution


Q.

The Avena curvature is used for bioassay of                [2016]
1 IAA  
2 ethylene  
3 ABA  
4 GA3  

Ans.

(1)

Avena curvature test is a test based on the experiments of Went (1928) which can measure auxin up to 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.