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Class 11 Biology MCQ Chapter 13 Plant Growth and Development
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Plant Growth and Development
Chapter – 13
| UNIT – (IV) PLANT PHYSIOLOGY |
| MCQ |
1. Which of the following kinds of growth is exhibited by plants?
(a) Closed-form of growth.
(b) The open form of growth.
(c) Both open and closed forms of growth.
(d) Fused form of growth.
Ans: (b) The open form of growth.
2. Which of the following meristems is not responsible for the secondary growth of plants?
(a) Lateral meristem.
(b) Vascular cambium.
(c) Apical meristem.
(d) Cork cambium.
Ans: (c) Apical meristem.
3. Growth is a consequence of which of the following?
(a) Increase in the amount of protoplasm.
(b) Increase in the amount of DNA.
(c) Increase in the amount of cytoplasm.
(d) Increase in the amount of RNA.
Ans: (a) Increase in the amount of protoplasm.
4. Which of the following is not a characteristic of the cell walls of root apex meristem?
(a) Secondary in nature.
(b) Thin.
(c) Cellulosic.
(d) Abundant plasmodesmatal connections.
Ans: (a) Secondary in nature.
5. Which of the following is the most fundamental characteristic of a living being?
(a) Growth.
(b) Differentiation.
(c) Height.
(d) Heart.
Ans: (a) Growth.
6. “One bad apple spoils the lot”. This common observation is best attributed to:
(a) Cytokinin.
(b) Gibberellin.
(c) Ethylene.
(d) Auxin
Ans: (c) Ethylene.
7. When a pea tendril comes in contact of a string, it coils around it. What kind of tropic response does it exhibit?
(a) Chemotropism.
(b) Phototropism.
(c) Heliotropism.
(d) Thigmotropism.
Ans: (d) Thigmotropism.
8. Which of the following kinds of growth is exhibited by plants?
(a) Closed-form of growth.
(b) The open form of growth.
(c) Both open and closed forms of growth.
(d) Fused form of growth.
Ans: (b) The open form of growth.
9. Which of the following meristems is responsible for the primary growth of the plant?
(a) Apical meristem.
(b) Lateral meristem.
(c) Vascular cambium.
(d) Cork cambium.
Ans: (a) Apical meristem.
10. The root and shoot apex of a plant represent which phase of the growth?
(a) Maturation.
(b) Elongation.
(c) Meristematic.
(d) Elevation.
Ans: (c) Meristematic.
11. Which of the following are plant hormones?
(a) Auxin.
(b) Gibberellins.
(c) Cytokinins.
(d) Abscisic Acid.
Choose the correct option:
(a) 1 & 2
(b) 2 & 3
(c) Only 3
(d) All the above.
Ans: (d) All the above.
12. Which of the following meristems is not responsible for the secondary growth of plants?
(a) Lateral meristem.
(b) Vascular cambium.
(c) Apical meristem.
(d) Cork cambium.
Ans: (c) Apical meristem.
13. One single maize root apical meristem can give rise to how many new cells per hour?
(a) 1700
(b) 18,000
(c) 17,500
(d) 17,000
Ans: (c) 17,500
14. What is the term for the process by which plants increase in size?
(a) Germination.
(b) Growth.
(c) Development.
(d) Differentiation.
Ans: (b) Growth.
15. The plant hormone responsible for cell elongation is:
(a) Cytokinin.
(b) Gibberellin.
(c) Auxin.
(d) Ethylene.
Ans: (c) Auxin.
