If light falls on a plant stem from one side only then towards which side will the stem bend?
Answer and explanation
Correct answer: Towards light
A shoot normally shows positive phototropism, meaning it grows towards a directional light stimulus. Auxin becomes distributed more on the shaded side of the stem, where it promotes greater cell elongation. Because the shaded side grows faster, the stem curves towards the illuminated side. It does not bend downward, move away from light, or remain straight when the light is one-sided.
Frequently asked questions
What is the correct answer to this question?
Towards light
Why is this the correct answer?
A shoot normally shows positive phototropism, meaning it grows towards a directional light stimulus. Auxin becomes distributed more on the shaded side of the stem, where it promotes greater cell elongation. Because the shaded side grows faster, the stem curves towards the illuminated side. It does not bend downward, move away from light, or remain straight when the light is one-sided.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Control and Coordination. Topic: Plant hormones.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
