Question

Bioassay for gibberellin is

• A. Avena curvature test
• B. Seed dormancy test
• C. Dwarf maize test
• D. Green leaf test

Answer 1

The correct option is C Dwarf maize test

There are various bioassay for gibberellin such as dwarf maize test, hypocotyl test, barely endosperm test, etc. Dwarf maize test is based on the principle that gibberellin causes elongation of the internodes. In maize, it also increases the length of the leaf sheaths surrounding the internodes. Length of the leaf sheath is directly proportional to the gibberellin concentration. Avena curvature test is a bioassay for auxin.

Thus, the correct answer is option C.