NEET Botany Mineral Nutrition Questions Solved

NEET - 2015

Auxin can be bioassayed by

(a) Avena coleoptile curvature

(b) hydroponics

(c) potometer

(d) lettuce hypocotyl elongation

Auxin is a phytohormone that is often bioassayed by Avena coleoptile curvature test. The angle of curvature of a decapitated oat coleoptile is measured after placing an agar block containing auxin on one side. The ability of auxin to stimulate shoot growth is then measured.

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