Quiznetik

Horticultural Science | Set 1

1. The edible part of potato is:

Correct : B. Tuber

2. Vegetable production for local consumption is:

Correct : A. Market gardening

3. Most of the summer vegetables are:

Correct : A. Annual

4. In seed formation the inner integument remains thin and develops into:

Correct : B. Tegmen

5. During seed formation, a sear left by the funiculus is termed as

Correct : A. Hilum

6. Cracking in tomato fruit is due to:

Correct : D. All of these

7. Endosperm like tissue (2n) in seed developing from nucellus is :

Correct : C. Perisperm

8. Orthodox seeds after dissemination may be

Correct : D. All of above

9. Secondary dormancy in non dormant seeds is due to:

Correct : A. Temperature

10. Germination of undeveloped seeds is favored by:

Correct : D. a & b

11. During stratification, the most important factor is:

Correct : D. All of above

12. Stage at which seed achieves it maximum dry weight and has maximum germination potential and vigor is:

Correct : A. Physiological maturity

13. Seed vigor is affected by

Correct : D. All of above

14. Tetrazolium test to check seed viability is

Correct : D. a & c

15. Researchers describe seed moisture contents in terms of :

Correct : D. a & b

16. Controlled inhibition of seed is termed as:

Correct : D. None of above

17. Celery and lettuce at high temperature become

Correct : B. Thermodormant

18. Excessive soil moisture, late in the season cause.

Correct : C. Decrease in TSS increase in dry matter

19. Most of following category crops are shallow rooted

Correct : A. Summer

20. Deep rooted vegetables require:

Correct : C. Both a & b

21. Fruit of following vegetables is edible:

Correct : A. Summer

22. Mulches are mainly used to reduce

Correct : D. All of above

23. What type of mulches reduce soil temperature?

Correct : A. Organic mulch

24. For hybrid seed production _______ flowers are completely suppressed on female plants.

Correct : A. Staminate

25. Recommended cucumber cultivars under tunnel production technology are:

Correct : B. Gynoecious

26. Flowering in water melon is unaffected by light duration as it is:

Correct : B. Long day short night plant

27. Nature of pollination in cucurbits is:

Correct : A. Highly cross pollinated

28. Ginger is commonly cultivated as:

Correct : A. Annual

29. Cross pollination is essential in following type of vegetables.

Correct : B. Dioecious

30. Cross pollination in plants bearing bisexual flowers is due to

Correct : D. All of above

31. In anemophilous plants, pollens are disseminated by means of:

Correct : A. Insects

32. In pollen development Gametocides induces a problem of:

Correct : A. Sterility

33. Production of seeds without fertilization is termed as:

Correct : B. Parthenogenesis

34. Most of the hybrid watermelon and cucumber are:

Correct : D. Colchiploids

35. Removal of off type plants from a seed field is termed as:

Correct : B. Rouging

36. The most important seed component affecting seed /viability during storage is:

Correct : A. Temperature

37. Potato is generally propagated through

Correct : D. All of above

38. Isolation during seed production is done by:

Correct : B. Plantation at a distance

39. The most common pollinator insect in Pakistan is

Correct : C. Honey bees

40. Seed production in biennial vegetables is mostly done by:

Correct : D. All of above

41. Male sterily is not due to

Correct : D. Nutritional factor

42. Hybrid vigor in vegetables is manifested by

Correct : D. All of above

43. Water melon for seed should be harvested when

Correct : A. Tendrils wither

44. In Pakistan, vegetables for seed production are harvested by:

Correct : A. Manual method

45. During storage of vegetable seeds, seed moisture should be

Correct : A. Less than 10%

46. The poorest seed storage capacity is in:

Correct : D. Onion

47. Nitrates are absorbed at pH below ___________:

Correct : A. 5

48. Hormones which control apical dominance are:

Correct : A. Auxins

49. Tetraploid watermelon must be pollinated by ____ plants to produce a seedless watermelon

Correct : C. Diploid

50. Which vegetable cannot be grown as an off season vegetable:

Correct : B. Potato

51. Lower temperature than normal convert male flowers into perfect flowers in ________:

Correct : C. Papaya

52. Tomato is a _________ crop.

Correct : A. Self pollinated

53. Turmeric is propagated by:

Correct : C. Rhizome

54. Sweet potato is propagated by:

Correct : D. a & b

55. Self pollination is a form of:

Correct : A. Inbreeding

56. Cross pollination is associated with:

Correct : B. Chasmogamy

57. Completion of pollination and fertilization in unopened flower bud is termed as

Correct : C. Cleistogamy

58. Maturation of anthers and stigma at the same time refers to:

Correct : A. Homogamy

59. Fertilization after opining of flower refers to:

Correct : B. Chasmogamy

60. Male sterility promotes:

Correct : D. Chasmogamy

61. Exposure of seed to low temperature before germination is termed as :

Correct : B. Stratification

62. Imbibed or germinated seeds subjected to cold temperature is termed as:

Correct : C. Vernalization

63. Which of following vegetable does not require specific low temperature before flowering:

Correct : D. Brinjal

64. Edible part of cauliflower is :

Correct : C. Vegetative bud

65. Edible portion of cabbage is

Correct : B. Leaves

66. Cole crops are:

Correct : A. Hardy

67. The commercial variety of watermelon is:

Correct : A. Sugar baby

68. Vine of crop of bottle gourd is not staked during:

Correct : A. Summer season

69. Which one is not the best source of protein?

Correct : A. Potatoes

70. The cause of hotness in Chillies is:

Correct : B. Capsaicin

71. Which crop is most susceptible to viral infection :

Correct : B. Tomato

72. Which of the following vegetable has a dioecious behaviour:

Correct : C. Bitter gourd

73. Consecutive use of garlic will reduce the level of:

Correct : A. Cholesterol

74. Bulb production in onion is dependent upon:

Correct : C. Day length

75. Red colour of carrot is due to :

Correct : B. Carotene

76. Colour of carrot roots is affected by:

Correct : B. Soil moisture

77. Radish belongs to family:

Correct : B. Umbelliferae

78. The portion of axis below the cotyledons in seed is:

Correct : B. Hypocotyl

79. In spinach, pollination takes place by means of:

Correct : D. Wind

80. Tender crop cannot tolerate a minimum temperature of

Correct : D. All of above

81. Optimum temperature for cool season vegetables is:

Correct : C. 18-24°C

82. Which one is not an appropriate approach to control frost?

Correct : A. Avoidance

83. Tomato, chillies and brinjal are grouped as

Correct : C. Solanaceous crops

84. Color development in tomato fruit is due to

Correct : A. Lycopene

85. Cucurbits consumed at immature stage are grouped under:

Correct : C. Gourds

86. Almost all vegetables are dioeceous with respect to flower.

Correct : D. None of these

87. Term vine yard is used for:

Correct : A. Grape plantation

88. Term viticulture is used for:

Correct : A. Grape cultivation

89. Home gardening deals with vegetable production for:

Correct : A. Home consumption

90. Truck gardening means vegetable production for:

Correct : A. Distant places

91. Tip burn of lettuce occurs at high air temperature when the soil is _______:

Correct : B. Dry

92. Organic crop cultivation is :

Correct : B. Without fertilizers

93. Thinning in vegetables is practiced to maintain:

Correct : A. Plant x Plant distance

94. Transplanting means

Correct : A. Shifting of seedlings

95. Shrubs fall in the category of

Correct : A. 7-15 feet high

96. Deciduous plants are mostly grown in

Correct : A. Hilly area

97. Vine mean climbing/trailing plants with

Correct : A. Herbaceous stem

98. Monoecious plants have male and female sexes/flowers on

Correct : A. Same plant

99. Hardy crops /plants are acclimatized against

Correct : C. Both of these

100. True fruits developed from

Correct : A. Ovary