Class 10 Science CONTROL AND COORDINATION Practice Worksheet for Biology
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Multiple choice questions
Question 1. Response in plant are regulated by
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
D. Phototropic Question 4. Unlike tropisms, nastic movement are in response to
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
D. Hydrotropism Question 7. The bending of shoot tip towards light is known as
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?
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 Answers
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?
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