Quiznetik

Horticultural Science | Set 9

1. Which of the following annual is used in rock gardening?

Correct : A. Cosmos

2. Which of the following annual is used as ground cover?

Correct : A. Musemberanthemum

3. Which of these annual is long season bloom

Correct : A. Statice

4. Which of these are temporary visitor in the garden plantation.

Correct : C. Annuals

5. During the summer, day time temperature in the forest are commonly cooler than open areas

Correct : B. 10°C

6. Where the physiotherapy in floriculture can be exercised?

Correct : D. All of these

7. Lotus is famous for

Correct : C. Water gardening

8. For foundation plantings, plants should be

Correct : B. Annual

9. Which of these create overall effect of various features, styles and colour schemes of the total scene.

Correct : A. Harmony

10. The change in chromosome that is an exact multiple of basic set of chromosome is termed as

Correct : A. Euploid

11. The petals in a flower are collectively called

Correct : C. Corolla

12. In Pakistan the postharvest losses of fruits and vegetables ranges between;

Correct : D. 20-40%

13. Quality of fruits and vegetables for fresh consumption is determined by;

Correct : A. Grower

14. Vegetables or their products are preserved by means of:

Correct : C. Processing

15. . A physical aging activity in which plant tissue degenerate and ultimately die is called.

Correct : C. Senescence

16. Degeneration and death of aerial plant parts like leaves, branches, flowers and fruit but not underground plant parts is called;

Correct : B. Partial senescence

17. Synthetic products which when applied to plants, produce reactions almost identical to hormones, are called

Correct : B. Plant growth regulators

18. Ethylene has horticultural uses such as;

Correct : D. All of above

19. Low temperature injury includes;

Correct : A. Chilling injury

20. Carotene is a precursor of ;

Correct : C. Vitamin-A

21. A form of controlled atmosphere storage in which the produce is stored in a partial vacuum is called;

Correct : A. Hypo baric storage

22. Total soluble solids in fruits or vegetables are measured by;

Correct : C. Refractrometer

23. Acidity is readily determined from a sample of extracted juice by titration with normal alkaline solution;

Correct : A. 0.1 N NaoH

24. The best time of harvest for perishable fruits and vegetables is ;

Correct : A. Morning

25. In mangoes the established method for evaluation of maturity is;

Correct : C. Dry matter contents

26. If the fruits are coated with wax the rate of water loss can be reduced upto ;

Correct : D. 30-50%

27. Sweet potatoes can be cured at around 30°C and 90-95% RH for;

Correct : C. 4-7 days prior to storage

28. In apples internal breakdown can be reduced during cold storage by treating with;

Correct : C. Calcium

29. The most common packing material used for mango and citrus in Pakistan is;

Correct : D. Wooden crates

30. The optimum storage temperature for apple ranges from;

Correct : A. 0-1°C

31. After harvest the rate of respiration increases in;

Correct : D. Climacteric fruits

32. Which is the best indicator of metabolic activities and potential storage life of fresh produce;

Correct : B. Rate of respiration

33. As storage period of most fruits is increased, acidity and vitamin C;

Correct : A. Increase

34. During curing of tuber crops;

Correct : D. All of above

35. The most common radiation dose used for extending shelf-life of fruits and vegetables ranges between;

Correct : A. 0.01-3.0 kGy

36. In controlled atmosphere storage;

Correct : A. Temperature and RH is controlled

37. Chilling injury is common in;

Correct : B. Tropical and sub-tropical fruits

38. Which enzyme is involved in ethylene synthesis;

Correct : D. a & b

39. Safe storage temperature for most mango cultivars is;

Correct : C. 13°C

40. During storage of most fresh produce the relative humidity should be;

Correct : D. 85-95%

41. Which crop has higher respiration rate;

Correct : A. Cabbage

42. Silver thiosulphate extend vase life of cut flowers by;

Correct : D. Anti-auxins properties

43. Which one is the non-climacteric fruit;

Correct : D. Citrus

44. Internal browning in fresh produce is the result of ;

Correct : B. Action of polyphenoloxidase (PPO)

45. In onions the maturity is determined by;

Correct : D. Tops drooping

46. The stage at which rose flowers should be cut;

Correct : B. At tight-bud stage

47. The postharvest quality in carnation flowers is observed better when they are cut at;

Correct : C. Half bud and half open stage

48. The common fumigant applied to fruit crops after harvest, for controlling postharvest diseases;

Correct : A. Ca(OH)2

49. The best method of harvesting citrus fruits is;

Correct : B. Clipping

50. The most effective fungicide for controlling citrus fruit diseases caused by Penicillium spp. is;

Correct : B. Carbendazim

51. Active ingredients in plants are defined as:

Correct : C. Preventing or curing diseases

52. According to international standards medicinal plants are those plants which have active ingredients in the range of:

Correct : D. none of above

53. The botanical name of Ispaghol is

Correct : C. Ocimum bacilum

54. The most potential medicinal plant according to HOLY PROPHET (SAW) is

Correct : D. Kalongi

55. Best yield of rose oil from rose petals is obtained by

Correct : D. Carbon dioxide extraction

56. Aromatic biosynthesis in plants takes place by

Correct : D. None of above

57. Tea leaves contains

Correct : C. Alkaloids and tannins

58. Which plant contain cardio active glycoside

Correct : B. Cardamom

59. Coriander contain volatile oil

Correct : A. 0.8%

60. Alkaloids are

Correct : B. Neutral compounds

61. Molaurty is defined as number of moles of solute per

Correct : D. 1 liter of solution

62. In scientific literature referencing is necessary to :

Correct : D. All of above

63. In the case of uniform experimental material which experiment design is most suitable.

Correct : C. CRD

64. In case of two sources of variation, which experimental design is suitable.

Correct : C. Latin Square

65. In order to decrease standard error

Correct : D. Replication numbers should be increased

66. Tetrazolium chloride test is used for

Correct : C. Viability of seeds

67. In Pakistan consumption of fruits and vegetables

Correct : C. Vegetables is more

68. High temperature before harvest in plums causes ________

Correct : B. Kelsey spot

69. Green bananas are injured when exposed to a temperature below _____ °F:

Correct : B. 50

70. Ammonia is converted into ________ by bacteria during first step:

Correct : A. Nitrites

71. Maximum nitrogen fixation per acre is __________ lbs annually :

Correct : A. 250

72. Cuttings with ________ show more success of rooting :

Correct : B. Opening buds

73. _________ removes the inhibiting substances and the organs producing them

Correct : A. Topping

74. __________ is produced in the meso and endocarp of sound ripe apples :

Correct : A. Ethylene

75. Tops of peach budded on Marianna plum suddenly fail because of ______ break down :

Correct : B. Phloem tissue

76. Growth substances are translocated both up and down in the stem chiefly in the _______ :

Correct : A. Phloem

77. More fruits spur formation is observed in apple due to ________ pruning :

Correct : A. Light

78. Light summer pruning helps in proper _____________:

Correct : A. Coloration

79. Tree growth becomes more compact as a result of _________:

Correct : B. Heading back

80. Green leaves of plants are able to __________ all the vitamins that they can use :

Correct : A. Synthesize

81. Soil particles carry _________ charge:

Correct : A. Negative

82. Citrus canker is a :

Correct : B. Bacterial disease

83. Soil solution becomes _________ under dry conditions :

Correct : A. Dilute

84. Nitrogen is absorbed in form of ____________:

Correct : C. Nitrate

85. Anthracnose resistant variety of French bean is:

Correct : C. Tweed Wonder

86. The best suitable storage condition for fresh unshelled peas is:

Correct : B. 0 degree C and 90-95% RH

87. Fungicide for controlling powdery mildew diseases of pea is:

Correct : B. Indofil M-45

88. Garden beet belongs to the genus of:

Correct : B. Beta

89. ’ Durgapura Kesar’’ is an important cultivator of:

Correct : B. Water melon

90. Cucumber fruits can be stored for longer period at the temperature of:

Correct : C. 25 degrees C

91. Cluster bean is:

Correct : A. Self-pollinated

92. Cowpea is probably a native of:

Correct : C. Central Africa

93. Vegetables are rich source of:

Correct : A. Vitamins

94. Virus disease of chilli are spread by:

Correct : A. White flies

95. Vitamin C content in French bean is enhanced with the application of :

Correct : A. Zinc

96. Chenopodiaceae is the family of:

Correct : D. Spinach

97. Which of the following is an early variety of cauliflower?

Correct : A. Pusa Katki

98. Which of the following is a true vegetable crop?

Correct : B. Okra

99. Tomato variety RKMT is evolved through:

Correct : A. X-rays

100. Turnip belongs to the family?

Correct : C. Cruciferae