Biology 11 Chapter - 10 Form and Function in Plants -16

Biology 11 Chapter - 10
Form and Function in Plants -16

1. Which one of the following is not the effect of ethene?

a) Promote root growth
b) Inhibit root growth
c) Break bud dormancy
d) Promote fruit ripening

2. Nervous system in plants is?

a) A. Absent
b) B. Central
c) C. Peripheral
d) D. B and c are correct

3. Phototropism is the response of plant parts to?

a) Light
b) Temperature
c) Gravity
d) Water

4. Thigmotropism is the response of plants to?

a) Touch
b) Temperature
c) Light
d) Water

5. Movements of plant parts in response to the force of gravity is known as?

a) Geotropism
b) Hydrotropism
c) Thigmotropism
d) Phototropism

6. Chemotropism is the plant response to?

a) Chemicals
b) Touch
c) Temperature
d) Water

7. Which one of the following is not correct?

a) Shoots show negative phototropism
b) Roots show positive geotropism
c) Shoots show negative geotropism
d) Shoots show positive phototropism

8. The effect of the length of light periods on the formation of flowers in plants is known as?

a) Photoperiodism
b) Phototropism
c) Thigmotropism
d) Vernalization

9. In the experiments of garner and allard, the tobacco plant that did not flower was?

a) Maryland mammoth tobacco plant
b) California mammoth tobacco plant
c) Lahore mammoth tobacco plant
d) Delhi mammoth tobacco plant

10. Variations in day length is known as?a) Photoperiod
b) Phototropism
c) Geotropism
d) Chemotropism

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