NEET BIOLOGY

Detailed explanation-1: -Plant movement in reaction to chemical stimuli is known as chemotropism. The growth response is positive chemotropism when it is directed toward the stimulus. When the growth response is away from the stimulus, it is called negative chemotropism. Example: Growth of pollen tubes towards ovules.

Detailed explanation-2: -Common tropic responses in plants include phototropism, gravitropism, thigmotropism, hydrotropism, thermotropism, and chemotropism.

Detailed explanation-3: -Chemotropism is the movement of plant parts in response to chemicals. Thus, the stimulus for chemotropism is “Chemicals”.