NEET BIOLOGY

Detailed explanation-1: -Chemotropism is known as growth or movement of a complete plant or plant parts towards the chemical stimulus. For example the growth of pollen tube down to the ovule in the ovary through the stigma and style during fertilization in order to respond to the presence of sugars in the style. Was this answer helpful?

Detailed explanation-2: -(iii) Growth of polen tube towards ovum is an example of chemotropism. The growth of the pollen tube toward the ovule responses to the chemicals released by the stigma.

Detailed explanation-3: -Chemotropism is growth in the direction of a chemical stimulus. This type of growth is observed during pollen tube growth in Angiosperms .

Detailed explanation-4: -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.