Quiznetik

Horticultural Science | Set 5

1. Papaya is still being commercially propagated from

Correct : C. Seeds

2. For good pollination in papaya orchard it is necessary that male plants should be

Correct : A. 5-10%

3. Silver Oak belongs to family:

Correct : D. Proteaceae

4. Pollination in tomatoes under tunnel production is carried out by:

Correct : D. Vibration

5. Dwarfing rootstock for apple in heavy soils is:

Correct : B. M-9

6. Rate of ethylene production in citrus is comparatively_______ than in mango.

Correct : B. Lower

7. Lemons are usually degreened at:

Correct : B. 16°C

8. Postharvest fungicidal treatment of mango fruit is done with:

Correct : A. Thiobendazole (TBZ)

9. __________ variety of apple is reported to perform well at lower altitudes.

Correct : A. Enna

10. Dhaki variety of date palm was originated in:

Correct : B. NWFP

11. Which of the following vegetable crop is a relative of cotton:

Correct : B. Okra

12. In pineapple sweet orange, fruit drop in month of June is upto:

Correct : D. 96%

13. Hodgson divided genus citrus into:

Correct : C. 36 species

14. In Pakistan, yield of potato range between :

Correct : C. 20-25 ton

15. Motia (ornamental) belongs to family:

Correct : A. Oleacecae

16. Rubber plant (ornamental) belongs to family:

Correct : B. Moraceae

17. Bougainvillea (ornamental) belongs to family:

Correct : D. Nyctaginaceae

18. Germination percentage in sour orange rootstock is:

Correct : A. 50-60%

19. In Kinnow mandarin, fruit drop in month of June is upto:

Correct : B. 75%

20. Following species of citrus can be propagated through cutting.

Correct : B. Sweet lime

21. Following species of citrus can be propagated through layering.

Correct : C. Kaghzi lime

22. In Punjab, most of the fresh vegetable production is carried out:

Correct : A. Near cities

23. Which of the following crop has high sulphur contents:

Correct : B. Onion

24. During propagation through cuttings, which hormone(s) is/are used for root promotion?

Correct : B. Seradix

25. Rubber plant can be propagated through:

Correct : C. All above

26. Silver Oak produces seeds after age of:

Correct : C. 10 years

27. Which of the following plants are used for the extraction of scent?

Correct : C. Citrus

28. The first ever auxin discovered was:

Correct : C. IAA

29. Mowing of grasses in winter is recommended after:

Correct : D. Both ‘b’ and ‘c’

30. Major types of greenhouse are

Correct : D. a & b

31. At the time of transplanting, weight of date palm sucker should be:

Correct : B. 10-20 kg

32. Following plant(s) is/are propagated through seed.

Correct : D. All above

33. Citrus seeds can be stored with Charcoal at following temperature in dry conditions.

Correct : B. 3-10°C

34. Seed germination percentage of rough lemon is:

Correct : B. 60-70%

35. Most serious insect/pest(s) of apple is/are:

Correct : A. Codling moth

36. Postharvest fumigation of citrus used to be done with:

Correct : B. Ethylene Dibromide (EDB)

37. Soil compaction __________ yield of potato.

Correct : B. Decreases

38. Cost benefit ratio in potato production should range:

Correct : D. Both ‘a’ and ‘b’

39. “Thalsa” is a variety of potato very suitable for the region of:

Correct : A. Peshawar

40. Yield of carrot is maximum at pH:

Correct : A. 6.5

41. Temperate varieties of carrot have ________ life cycle.

Correct : B. Biennial

42. Which of the following vegetable is also called as ‘poor man’s food’?

Correct : B. Onion

43. Which of the following factor(s) is/are more suitable for good onion production?

Correct : D. All above

44. Green potato tuber is inedible due to:

Correct : A. Carcinogenic

45. CRD is a statistical approach for:

Correct : B. Laboratory experiment

46. Soft nose is a disorder of:

Correct : C. Mango fruit

47. Guava seed before germination requires:

Correct : C. Commercial grade H2SO4 treatment

48. Fruit splitting in pomegranate and litchi is due mainly to:

Correct : D. All of above

49. Production of vegetable out of their normal season of outdoor production is known as:

Correct : A. Vegetable forcing

50. Yellow wasp is a major pest of:

Correct : A. Grape fruit

51. The only pest of date fruit at green hard stage is:

Correct : B. Parrot

52. Study which deals with the microscopic structure of tissue is called:

Correct : B. Histology

53. Study of plant species in relation to its environmental history is called:

Correct : B. Histology

54. Elevation of temperate region from sea level ranges:

Correct : D. b & c

55. Banana belongs to type of fruit, in which the edible portion is:

Correct : C. Berry

56. Almond is a drupe fruit, in which the edible portion is:

Correct : C. Seed

57. Frond length of cultivated date ranges:

Correct : B. 3-4 m

58. The most important characteristics of tropical region are:

Correct : D. High temperature

59. Addition of __________ hastens the time of fruit bud differentiation in fruit plants:

Correct : C. Nitrates

60. More harmones are accumulated in plants due to accumulation of _______:

Correct : B. Starch

61. Reproductive phase of fruit plants is improved by the accumulation of _____:

Correct : B. Starch

62. Pruning in old fruit trees increases fruit bud formation by increasing ______:

Correct : B. New vegetative growth

63. At a temperature slightly above optimum, carbohydrates are ________:

Correct : C. Utilized

64. Apical bud becomes ________ in mango at fruit bud differentiation :

Correct : C. Dome shaped

65. The phase of fruit bud formation continues until _________:

Correct : A. Anthesis

66. The development of flower bud in tuberose is :

Correct : D. Acropetal

67. Rate of bud development is ___________ upto winter season :

Correct : B. Rapid

68. Dormancy is a function of interaction of growth promoter like GA and growth inhibitor like _________:

Correct : A. ABA

69. Dormancy of seed is a biological mechanisms that provides protection against ______:

Correct : C. Pre mature germination

70. The major metabolic process which takes place in the harvested produce is _______:

Correct : B. Respiration

71. At fruit bud differentiation in mango, C/N ratio is _______:

Correct : C. High

72. Annual bearing apples differentiate much greater proportion of their flowers on _______:

Correct : B. Shoots

73. Self fertility refers to the ability of a variety to produce fruits with viable ___:

Correct : B. Seeds

74. Flowers having stigma below the highest anthers are called _______:

Correct : A. Apistigmatic

75. Failure of a viable pollen to grow down the style of the flower of the same variety is called ___________:

Correct : B. Self incompatibility

76. Piping is carried out in

Correct : D. Carnation

77. Chlorophyll formation takes place within a light wavelength of _________:

Correct : C. 300-675

78. Root formation is promoted in softwood cuttings under light intensity of __________ foot candles:

Correct : B. 150-200

79. Fruiting body of roses is called:

Correct : B. Hips

80. Apple and pear form their flowers buds in ___________:

Correct : B. July-August

81. Volatile oil are those oil which can evaporate at :

Correct : A. 25°C

82. The renewal of NO3 involves release of ___________ from organic fraction of the soil and its rapid nitrification:

Correct : B. NH4

83. Most of Nitrogen is used in the decomposition of __________ and thus plant shows deficiency symptoms :

Correct : B. Cellulose

84. Toxicity of Mg can be modified by adding ________:

Correct : C. Ca

85. Injurious effects of sulphates can be replaced with the addition of ________:

Correct : A. Nitrates

86. Internal browning in apples takes place due to _______:

Correct : B. High temperature

87. Onion seeds can germinate at a temperature of :

Correct : B. 1-5°C

88. Dead heading is the removal of

Correct : C. Faded flowers

89. Hygrometer is used to measure

Correct : B. Humidity

90. Pinching out is the removal of

Correct : C. Growing point of buds

91. A thread-like stem or leaf which clings to any support, is known as

Correct : B. Tendril

92. A plant which is able to live under very dry conditions is called

Correct : A. Xerophyte

93. Removal of young flower buds to allow maximum development of the remainder is termed as:

Correct : B. Disbudding

94. Small, hair like outgrowth at the base of leaf stalk is termed as:

Correct : C. Stipule

95. Pruning in narrow leave evergreens should be done during:

Correct : D. Early spring

96. Which of the following plants require severe pruning?

Correct : A. Lagerstromea purporea

97. Which of the following climbers is important for its hardiness and flowers throughout year?

Correct : B. Bongainvillea glabra

98. Which of the following shrubs bears yellow flowers?

Correct : C. Thevetia nerifolia

99. Which of the following grounds cover is highly salt tolerant?

Correct : B. Bermuda grass

100. Which of the following shrubs is used as fruit beauty?

Correct : C. Citrus mitis