Phototropism

Q. Why does the shoot of a growing plant bend towards the light?

[1 Mark]

Q. The movement of plant part in the direction of light is:

1. Geotropism
2. Phototropism
3. Hydrotropism
4. All of these

Q.

Response of a plant to the changing relative length of the day and night is called phototropism.

1. True

2. False

Q. Roots usually exhibit negative phototropism.

1. True
2. False

Q. Growth towards a light source is called positive phototropism.

1. False
2. True

Q. Negative phototropism is also called ___.

Q.

Question 6
How does phototropism occur in plants?

Q. Question 19
The movement of sunflower in accordance with the path of the sun is due to

(a) phototropism
(b) geotropism
(c) chemotropism
(d) hydrotropism

Q.

Question 10
The movement of the shoot towards light is

(a) geotropism
(b) hydrotropism
(c) chemotropism
(d) phototropism

Q.

Question 40
What is a tropic movement? Explain with an example.