If a plant grows towards light but its root grows downward in darkness, what does this show?
Answer and explanation
Correct answer: Different parts respond differently to different stimuli
The shoot commonly shows positive phototropism by growing towards light, which improves light capture for photosynthesis. The root commonly shows positive gravitropism by growing downward, helping it anchor the plant and absorb water and minerals. These opposite directional responses demonstrate coordination in plants and show that different organs respond to different stimuli according to their functions. Hence A is correct.
Frequently asked questions
What is the correct answer to this question?
Different parts respond differently to different stimuli
Why is this the correct answer?
The shoot commonly shows positive phototropism by growing towards light, which improves light capture for photosynthesis. The root commonly shows positive gravitropism by growing downward, helping it anchor the plant and absorb water and minerals. These opposite directional responses demonstrate coordination in plants and show that different organs respond to different stimuli according to their functions. Hence A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
