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Class 11 Biology Chapter 15 Plant Growth And Development Quiz 3 (60 MCQs)

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1. Decapitation is done in tea plantation to promote lateral growth. This fact is related to:
2. The development of a plant from a seed.
3. The amount of water vapor present in air expressed as a percentage of the amount needed for saturation at the same temperature.
4. The activity of a-amylase in the endosperm of a germinating seed of barley is induced by
5. The lateral meristem consists of:
6. The type of growth in a plant that causes the plants roots and shoots to become longer.
7. Vegetative growth is the growth of:
8. The area of division (meristematic) is characterized by .....
9. Auxin and Cytokinin are antagonistic in which of the following functions?
10. What part of the plant has pollen stick to it?
11. All plants have the same optimal temperature.
12. The historical experiment on canary grasses coleoptile as a first step in the discovery of auxin was conducted by-
13. This hormone is why one bad apple can spoil the bunch
14. Branching is inhibited by ..... from the tip of a growing shoot, but this effect is encountered by ..... from the root.
15. The process of moving synthesized and absorbed food and nutrients within the plant is:
16. What grows on the plant after the flowers bloom?
17. A colorless, odorless gas produced by burning carbon and organic compounds and by respiration; it is naturally present in air and is absorbed by plants in photosynthesis
18. Which of the following is a characteristic of geometric growth?
19. Hormon yang berperan dalam merangsang pembelahan sel pada tanaman adalah .....
20. Which is NOT part of a seed?
21. Differentiation in plant is open because cells / tissues arising out of the same meristem-
22. Root hydrotropism is stronger than root geotropism.
23. Cytokinin helps in delay of leaf senescene by-
24. Assertion:Nutrients are required by plants for the synthesis of protoplasm and act as source of energy.Reason:Water provides the medium for enzymatic activities needed for growth.
25. ..... plays role on primary growth, while ..... plays role on secondary growth.
26. Performs photosynthesis
27. The kalin that affects flower formation is called .....
28. The only plant hormone that is a gas
29. The kalin that affects stem formation is .....
30. A-a synapse is formed by the membranes of pre and post synaptic neuronR-synaptic cleft may or may not be the part of synapse
31. Gibberellins have many effects. Which one of the following is not an effect of gibberellins in plants?
32. The ability of plant to follow different pathways and produce different structures in response to environment and phases of life is termed as-
33. Read the given statements and select the option that correctly identifies the incorrect ones.(i) Cytokinin is primarily concerned with cell division.(ii) C2H4 breaks seed and bud dormancy(iii) ABA stimulates the opening of stomata.(iv) C2H4 initiates germination in peanut seeds, sprouting of potato tubers.(v) ABA is synergistic to GA
34. Beta vulgaris is a
35. What would happen if you forget to add cytokinin to the culture medium?
36. Spraying sugarcane with gibberellins increases the yield by as much as 20 tonnes per acre. GA performs it-
37. Which nutrient deficiency causes leaves to become yellow at the tips and edges?
38. The optimal temperature for plant growth ranges from .....
39. What is the effect of photoperiodism on plants?
40. The process of cell division to create new cells for growth and repair of plant tissues.
41. Which environmental factors trigger the processes controlled by genes inside a seed?
42. Which example below is the site of primary growth that results in the plant increasing in height?
43. Where does photosynthesis primarily occur in a plant?
44. Promotes abscission of leaves and fruits, inhibits shoot elongation.
45. What is the meaning of the latin root word, 'dehiscent'.
46. Name the cellular process responsible for repair, growth, and development in living organisms.
47. Which hormone prevents the dropping of flowers and fruits?
48. The technical term used in the edible parts of the plants.
49. Apa peran air dalam pertumbuhan tanaman?
50. Hypogeal germination usually occurs in plants .....
51. Shoot initiation is promoted mainly by-
52. During pollination, what part of the flower does pollen stick to? *Hint:It's sticky!
53. One set of a plant was grown at 12 h day and 12 h night period cycles and it flowered, while in the other set night phase was interrupted by flash of light and it did not produce flower. Under which one of the following categories will you place this plant?
54. This bee has a lifespan of 3-5 years. There is only 1 in each hive.
55. Which hormone is known as the stress hormone in plants?
56. A region of tissue at the tips of shoots and roots where rapid cell division occurs to make that part of the plant longer.
57. What is the term used for the increase in the length of the plant body by the division of the meristematic cells?
58. Which of the following is NOT a benefit of hybrid plants?
59. Photosynthesis occurs in ..... , organelles in certain plants.
60. Treating seeds to stimulate natural conditions (usually placing them in a cold area for a period of time) in order to promote germination.
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