Question

what is meant by positive and negative tropic movements in plants

Answer 1

Tropic movements. When a plantshows some growth movement in response to a stimulus, it is known astropism. ... If the movement is towards the direction of stimuli, it is known aspositive tropism while movement away from stimuli is known as negative tropism.

Answer 2

Positive tropic movements are the movements which react according to the stimulus but negative tropic movements react opposite to the stimuli.For example in phototropism the branches shoe positive phototropism while the roots show negative phototropism