# Class 10 Science CONTROL AND COORDINATION Practice Worksheet for Biology

In this page we have Class 10 Science CONTROL AND COORDINATION Practice Worksheet for Biology . Hope you like them and do not forget to like , social shar and comment at the end of the page.

## Multiple choice questions

Question 1. Response in plant are regulated by
A. Sunlight
B. Gravity
C. Air
D. Phytohormone
Question 2. Animals have specialized protein that helps in movement. Plant show movement due to change in
A. nature of plasma membrane
B. amount of water
C. amount of enzyme
D. none of these
Question 3. Movement of pollen tubes towards ovule is an example of
A. Geotropism
B. Hydrotropism
C. Chemotropism
D. Phototropic
Question 4. Unlike tropisms, nastic movement are in response to
A. Darkness
B. Wind
C. Non- directional stimuli
D. Directional stimuli
Question 5. Roots grow downward as a ________response.
A. Positive phototropic
B. Negative phototropic
C. Negative geotropic
D. All of these
Question 6. Ripening of fruits, such as bananas, is hastened by
A. Gibberellins
B. Phototropism
C. Chemotropism
D. Hydrotropism
Question 7. The bending of shoot tip towards light is known as
A. Geotropism
B. Phototropism
C. Chemotropism
D. Hydrotropism
Question 8. Drooping of leaf in Mimosa plant is
A. due to dependence on growth
B. movement independent of growth
C. due to loss of turgidity
D. Both (B) & (C)
Question 9. Which plant hormone is also called as growth inhibitor?
A. auxin
B. gibberellins
C. abscisic acid
D. ascorbic acid
Question 10. Nastic movements
A. are nondirectional
B. are directional
C. may or may not be directional
D. none of these

## Subjective Questions

Question 1. Why tropic movement are mostly irreversible?
Question 2. How auxin helps in Phototropism.
Question 3. What is significance of unidirectional light in experiment of Phototropism.
Question 4. Why response of plants is slower than  animals?
Question 5. How we can make plant more bushy?
Question 6. Name the plant hormone which is used as weedicine.
Question 7. Expand the following terms:
(i)GA           (ii)  2,4D     (iii) ABA           (iv) IAA       (v) IBA
Question 8. Why is abscisic acid known as stress hormone?
Question 9. Distinguish between nastic and tropic movement.
Question 10. If one fruit is ripened and if it is kept in a basket of raw fruits, then what will happen? What is the cause of it?

Given below are the links of some of the reference books for class 10 Science.

You can use above books for extra knowledge and practicing different questions.

### Practice Question

Question 1 Which among the following is not a base?
A) NaOH
B) $NH_4OH$
C) $C_2H_5OH$
D) KOH
Question 2 What is the minimum resistance which can be made using five resistors each of 1/2 Ohm?
A) 1/10 Ohm
B) 1/25 ohm
C) 10 ohm
D) 2 ohm
Question 3 Which of the following statement is incorrect? ?
A) For every hormone there is a gene
B) For production of every enzyme there is a gene
C) For every molecule of fat there is a gene
D) For every protein there is a gene

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