Growth Independent Movements

Q. How is the movement of leaves of the sensitive plant different from the movement of a shoot towards light?

[3 Marks]
[NCERT]
[Plant Movement]

Q.

Arrange the following activities in the order of the speed (fastest to slowest) in which they take place.
(i) Movement of mimosa when it is touched.
(ii) Movement of sunflower in response to day and night.
(iii) Growth – related movements of plants.

1. (iii) – (ii) - (i)

2. (ii) – (iii) – (i)

3. (i) – (ii) – (iii)

4. (iii) – (i) – (ii)

Q.

By changing the amount of water in them:

1. animal cells convey information.

2. plant cells change shape and convey information.

3. None of these

4. animal cells change shape.

Q. Direction of nastic movements is independent of the stimulus's position. State true or false.

1. True
2. False

Q. Which of the following can be a stimulus for plants?

1. Light
2. Water
3. Air pressure
4. Touch
5. Sun
6. Gravity
7. Electricity
8. Magnetism
9. Temperature

Q. Roots are positively geotropic and positively phototropic.

1. True
2. False

Q. Roots show negative geotropism.

1. True
2. False

Q. Bending of plant towards light is caused by .

1. auxin
2. cytokinin
3. gibberellin
4. ethylene

Q. Which of the following can be a stimulus for plants?

1. Light
2. Water
3. Air pressure
4. Touch
5. Sun
6. Gravity
7. Electricity
8. Magnetism
9. Temperature

Q. The hormone called is used to produce seedless fruits.

1. auxin
2. gibberellin
3. cytokinin
4. ethylene