STD 11 - 13. Plant growth and development — BIOLOGY STD 11 Science — Question
Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 13. Plant growth and development1 Mark
MCQ
The Avena curvature is used for bioassay of
✓
$IAA$
B
ethylene
C
$ABA$
D
$GA_3$.
✓
Answer
Correct option: A.
$IAA$
a (a) : 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 may serve as an accurate bioassay for this plant hormone.
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