Why are phototropism, hydrotropism, and geotropism placed in the same category?
Answer and explanation
Correct answer: Because all are direction-based growth responses
The governing concept is tropism, a directional growth response of a plant part to an external stimulus. Phototropism is growth in response to light, hydrotropism to water, and geotropism or gravitropism to gravity. Since the direction of stimulus influences the direction of growth in each case, option A is correct. They are not human reflexes, do not depend on blood circulation, and are not produced by muscles.
Frequently asked questions
What is the correct answer to this question?
Because all are direction-based growth responses
Why is this the correct answer?
The governing concept is tropism, a directional growth response of a plant part to an external stimulus. Phototropism is growth in response to light, hydrotropism to water, and geotropism or gravitropism to gravity. Since the direction of stimulus influences the direction of growth in each case, option A is correct. They are not human reflexes, do not depend on blood circulation, and are not produced by muscles.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
