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.
Frequently asked questions
What is the correct answer to this question?
Chemotropism
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
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