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Growth of the pollen tube towards the ovule is an example of what?

Answer and explanation

Correct answer: Chemotropism

Chemotropism is directional growth in response to chemical substances. During plant reproduction, chemical signals associated with the ovule guide the pollen tube toward it, enabling the male gamete to reach the female reproductive structure. Thus option A is correct. Phototropism responds to light, thigmotropism to touch, and hydrotropism to water, so they are not the governing stimuli here.

Related tags

Control CoordinationChemotropismPollen TubeControl And CoordinationWorld Of LivingScienceClass 10 Mcq

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