Question

what type of trophic movement do you ovserve in plants stem and roots .explain

Answer 1

1)Phototrophism: The hormone auxin is responsible for this. The stem grows in the direction of Sunlight so they are positively phototrophic and roots grow away from sunlight so they are negatively Phototrophic.

2) Geotrophism: In this, gravity is responsible. The roots are positively Geotrophic and stem is negatively Geotrophic.