First slide

Plant Growth Regulators

Question

An indole compound that controls xylem differentiation and helps in cell division was first isolated from

Easy

A

Human urine
B

Coleoptile tip of oats
C

Coleoptile tip of canary grass
D

Rice seedlings in Japan

Solution

Auxin helps to control xylem differentiation and helps in cell division. It is also an indole derivative. Auxin was first isolated from human urine by Kogl and Hagensmidt.

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