A) avena curvature test
B) callus formation
C) culture of fungus
D) seed dormancy
Correct Answer: A
Solution :
Bioassay is the testing of biological activity of a substance by employing living material. Went used Avena sativa Coat) coleoptiles in a technique called Avena coleoptile curvature test. ABA or abscisic acid induces dormancy in buds, seeds and underground storage organs. Unorganized and undifferentiated mass of cells forms during culture of cells known as callus. In callus culture, shoot and root regenerations are controlled, generally by auxin and cytokinin balance.
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