A young dicot seedling (e.g., soyabean) is laid horizontally on a surface and is subjected
Channel: Doubtnut
Date: 2020-08-16

A young dicot seedling (e.g., soyabean) is laid horizontally on a surface and is subjected to gravity stimulus. The shoot bends in upward direction and the root bends in downwards direction. Which out of the following is the possible reason for this movement ?