Quiznetik
Horticultural Science | Set 1
1. The edible part of potato is:
A. Root
B. Tuber
C. Rhizome
D. Corm
Correct : B. Tuber
2. Vegetable production for local consumption is:
A. Market gardening
B. Home gardening
C. Truck gardening
D. Vegetable forcing
Correct : A. Market gardening
3. Most of the summer vegetables are:
A. Annual
B. Biennial
C. Perennial
D. None
Correct : A. Annual
4. In seed formation the inner integument remains thin and develops into:
A. Testa
B. Tegmen
C. Aril
D. Hilum
Correct : B. Tegmen
5. During seed formation, a sear left by the funiculus is termed as
A. Hilum
B. Funiculus
C. Operculum
D. Raphe
Correct : A. Hilum
6. Cracking in tomato fruit is due to:
A. High nitrogen level
B. Temperature fluctuations
C. Soil moisture fluctuations
D. All of these
Correct : D. All of these
7. Endosperm like tissue (2n) in seed developing from nucellus is :
A. Endospem
B. Cotyledom
C. Perisperm
D. Mericarp
Correct : C. Perisperm
8. Orthodox seeds after dissemination may be
A. None dormant
B. Dormant
C. Quiescent
D. All of above
Correct : D. All of above
9. Secondary dormancy in non dormant seeds is due to:
A. Temperature
B. Moisture
C. Aeration
D. Light
Correct : A. Temperature
10. Germination of undeveloped seeds is favored by:
A. Warm temperature (>20°C)
B. Gibberallic acid
C. Low temperature (<20°C)
D. a & b
Correct : D. a & b
11. During stratification, the most important factor is:
A. Temperature
B. Duration
C. Media
D. All of above
Correct : D. All of above
12. Stage at which seed achieves it maximum dry weight and has maximum germination potential and vigor is:
A. Physiological maturity
B. Edible maturity
C. Harvest maturity
D. None of above
Correct : A. Physiological maturity
13. Seed vigor is affected by
A. Time of storage
B. Type of seed stored
C. Storage environment
D. All of above
Correct : D. All of above
14. Tetrazolium test to check seed viability is
A. Chemical test
B. Enzyme test
C. Germination test
D. a & c
Correct : D. a & c
15. Researchers describe seed moisture contents in terms of :
A. Dry weight
B. Wet weight
C. Percent weight
D. a & b
Correct : D. a & b
16. Controlled inhibition of seed is termed as:
A. Priming
B. Soaking
C. Chilling
D. None of above
Correct : D. None of above
17. Celery and lettuce at high temperature become
A. Photodormant
B. Thermodormant
C. Ecodormant
D. Non dormant
Correct : B. Thermodormant
18. Excessive soil moisture, late in the season cause.
A. Decrease in TSS decrease in dry matter
B. Increase in TSS decrease in dry matter
C. Decrease in TSS increase in dry matter
D. None of above
Correct : C. Decrease in TSS increase in dry matter
19. Most of following category crops are shallow rooted
A. Summer
B. Winter
C. Off season
D. All of above
Correct : A. Summer
20. Deep rooted vegetables require:
A. Less frequent irrigation
B. More water at each irrigation
C. Both a & b
D. None of above
Correct : C. Both a & b
21. Fruit of following vegetables is edible:
A. Summer
B. Winter
C. Cruciferous
D. All of above
Correct : A. Summer
22. Mulches are mainly used to reduce
A. Transpiration
B. Evaporation
C. Evapotranspiration
D. All of above
Correct : D. All of above
23. What type of mulches reduce soil temperature?
A. Organic mulch
B. Gray polythene
C. Black polythene
D. Transparent polythene
Correct : A. Organic mulch
24. For hybrid seed production _______ flowers are completely suppressed on female plants.
A. Staminate
B. Pistillate
C. Staminode
D. Alternate
Correct : A. Staminate
25. Recommended cucumber cultivars under tunnel production technology are:
A. Monoecious
B. Gynoecious
C. Andromonoecious
D. Gynomonoecious
Correct : B. Gynoecious
26. Flowering in water melon is unaffected by light duration as it is:
A. Short day long night plant
B. Long day short night plant
C. Day neutral plant
D. None of the above
Correct : B. Long day short night plant
27. Nature of pollination in cucurbits is:
A. Highly cross pollinated
B. Oftenly cross pollinated
C. Highly self pollinated
D. None of above
Correct : A. Highly cross pollinated
28. Ginger is commonly cultivated as:
A. Annual
B. Biennial
C. Perennial
D. Biannaul
Correct : A. Annual
29. Cross pollination is essential in following type of vegetables.
A. Monoecious
B. Dioecious
C. Gynoecious
D. Perigynous
Correct : B. Dioecious
30. Cross pollination in plants bearing bisexual flowers is due to
A. Dichogamy
B. Herkogamy
C. Heterostyly
D. All of above
Correct : D. All of above
31. In anemophilous plants, pollens are disseminated by means of:
A. Insects
B. Water
C. Wind
D. Gravity
Correct : A. Insects
32. In pollen development Gametocides induces a problem of:
A. Sterility
B. Viability
C. Fertility
D. Mobility
Correct : A. Sterility
33. Production of seeds without fertilization is termed as:
A. Parthenocarpy
B. Parthenogenesis
C. Gametogenesis
D. All of above
Correct : B. Parthenogenesis
34. Most of the hybrid watermelon and cucumber are:
A. Triproid
B. Diploids
C. Aneuploids
D. Colchiploids
Correct : D. Colchiploids
35. Removal of off type plants from a seed field is termed as:
A. Weeding
B. Rouging
C. Hoeing
D. All of above
Correct : B. Rouging
36. The most important seed component affecting seed /viability during storage is:
A. Temperature
B. Humidity
C. Moisture
D. Food reserves
Correct : A. Temperature
37. Potato is generally propagated through
A. Seed potato
B. Potato seed
C. True Potato Seed
D. All of above
Correct : D. All of above
38. Isolation during seed production is done by:
A. Types (Varieties)
B. Plantation at a distance
C. Zoning
D. All of above
Correct : B. Plantation at a distance
39. The most common pollinator insect in Pakistan is
A. Syrphid fly
B. Bumble bees
C. Honey bees
D. House fly
Correct : C. Honey bees
40. Seed production in biennial vegetables is mostly done by:
A. Seed to seed method
B. In situ method
C. Replanting method
D. All of above
Correct : D. All of above
41. Male sterily is not due to
A. Genetic factor
B. Genome factor
C. Cytogenetic factor
D. Nutritional factor
Correct : D. Nutritional factor
42. Hybrid vigor in vegetables is manifested by
A. High yield
B. Uniformity in size
C. Uniformity in maturity
D. All of above
Correct : D. All of above
43. Water melon for seed should be harvested when
A. Tendrils wither
B. Skin color is green
C. Skin color is pale yellow
D. Vine dry out
Correct : A. Tendrils wither
44. In Pakistan, vegetables for seed production are harvested by:
A. Manual method
B. Machines
C. Combine harvestors
D. All of above
Correct : A. Manual method
45. During storage of vegetable seeds, seed moisture should be
A. Less than 10%
B. Equal to 10%
C. Greater than 10%
D. None of above
Correct : A. Less than 10%
46. The poorest seed storage capacity is in:
A. Okra
B. Peas
C. Cucurbits
D. Onion
Correct : D. Onion
47. Nitrates are absorbed at pH below ___________:
A. 5
B. 6
C. 7
D. 8
Correct : A. 5
48. Hormones which control apical dominance are:
A. Auxins
B. Cytokinins
C. Gibberellins
D. Polyamines
Correct : A. Auxins
49. Tetraploid watermelon must be pollinated by ____ plants to produce a seedless watermelon
A. Triploid
B. Aneuploid
C. Diploid
D. Tetraploid
Correct : C. Diploid
50. Which vegetable cannot be grown as an off season vegetable:
A. Tomato
B. Potato
C. Chillies
D. Cucumber
Correct : B. Potato
51. Lower temperature than normal convert male flowers into perfect flowers in ________:
A. Date palm
B. Mango
C. Papaya
D. Citrus
Correct : C. Papaya
52. Tomato is a _________ crop.
A. Self pollinated
B. Insect pollinated
C. Oftenly cross pollinated
D. Wind pollinated
Correct : A. Self pollinated
53. Turmeric is propagated by:
A. Corms
B. Seed
C. Rhizome
D. Bulb
Correct : C. Rhizome
54. Sweet potato is propagated by:
A. Stem cuttings
B. Tubers
C. Roots
D. a & b
Correct : D. a & b
55. Self pollination is a form of:
A. Inbreeding
B. Out breeding
C. Random mating
D. None of these
Correct : A. Inbreeding
56. Cross pollination is associated with:
A. Cleistogamy
B. Chasmogamy
C. Dichogamy
D. Apogamy
Correct : B. Chasmogamy
57. Completion of pollination and fertilization in unopened flower bud is termed as
A. Chasmogamy
B. Apogamy
C. Cleistogamy
D. Dichogamy
Correct : C. Cleistogamy
58. Maturation of anthers and stigma at the same time refers to:
A. Homogamy
B. Chasmogamy
C. Cleistogamy
D. Dichogamy
Correct : A. Homogamy
59. Fertilization after opining of flower refers to:
A. Cleistogamy
B. Chasmogamy
C. Homogamy
D. Herkogamy
Correct : B. Chasmogamy
60. Male sterility promotes:
A. Autogamy
B. Allogamy
C. Homogamy
D. Chasmogamy
Correct : D. Chasmogamy
61. Exposure of seed to low temperature before germination is termed as :
A. Scarification
B. Stratification
C. Vernalization
D. All of above
Correct : B. Stratification
62. Imbibed or germinated seeds subjected to cold temperature is termed as:
A. Scarification
B. Startification
C. Vernalization
D. Sterilization
Correct : C. Vernalization
63. Which of following vegetable does not require specific low temperature before flowering:
A. Beetroot
B. Cabbage
C. Onion
D. Brinjal
Correct : D. Brinjal
64. Edible part of cauliflower is :
A. Flowers
B. Flower bud
C. Vegetative bud
D. Inflorescence
Correct : C. Vegetative bud
65. Edible portion of cabbage is
A. Terminal bud
B. Leaves
C. Leaves + inflorescence
D. All of above
Correct : B. Leaves
66. Cole crops are:
A. Hardy
B. Half hardy
C. Non hardy
D. Semi hardy
Correct : A. Hardy
67. The commercial variety of watermelon is:
A. Sugar baby
B. Red beauty
C. Red king
D. Sugary
Correct : A. Sugar baby
68. Vine of crop of bottle gourd is not staked during:
A. Summer season
B. Rainy season
C. Early season
D. Late season
Correct : A. Summer season
69. Which one is not the best source of protein?
A. Potatoes
B. Peas
C. Beans
D. Okra
Correct : A. Potatoes
70. The cause of hotness in Chillies is:
A. Cucurbitacin
B. Capsaicin
C. Allicin
D. All of above
Correct : B. Capsaicin
71. Which crop is most susceptible to viral infection :
A. Chilies
B. Tomato
C. Onion
D. Brinjal
Correct : B. Tomato
72. Which of the following vegetable has a dioecious behaviour:
A. Onion
B. Cabbage
C. Bitter gourd
D. Spinach
Correct : C. Bitter gourd
73. Consecutive use of garlic will reduce the level of:
A. Cholesterol
B. Sugar
C. Uric acid
D. None of above
Correct : A. Cholesterol
74. Bulb production in onion is dependent upon:
A. Temperature
B. Soil moisture
C. Day length
D. All of above
Correct : C. Day length
75. Red colour of carrot is due to :
A. Lycopene
B. Carotene
C. Anthocyanin
D. Propanene
Correct : B. Carotene
76. Colour of carrot roots is affected by:
A. Soil temperature
B. Soil moisture
C. Soil texture
D. All of above
Correct : B. Soil moisture
77. Radish belongs to family:
A. Cruciferae
B. Umbelliferae
C. Leguminoseae
D. Poaceae
Correct : B. Umbelliferae
78. The portion of axis below the cotyledons in seed is:
A. Micropyl
B. Hypocotyl
C. Epicotyl
D. None of above
Correct : B. Hypocotyl
79. In spinach, pollination takes place by means of:
A. Water
B. Insects
C. Birds
D. Wind
Correct : D. Wind
80. Tender crop cannot tolerate a minimum temperature of
A. -2°C
B. -1°C
C. 0°C
D. All of above
Correct : D. All of above
81. Optimum temperature for cool season vegetables is:
A. 25-30°C
B. 25-27°C
C. 18-24°C
D. 15-20°C
Correct : C. 18-24°C
82. Which one is not an appropriate approach to control frost?
A. Avoidance
B. Reduction of heat loss
C. Addition of heat
D. Transmittance of control
Correct : A. Avoidance
83. Tomato, chillies and brinjal are grouped as
A. Cole crops
B. Fruit crops
C. Solanaceous crops
D. Summer crops
Correct : C. Solanaceous crops
84. Color development in tomato fruit is due to
A. Lycopene
B. Carotenoid
C. Polypropylene
D. All of above
Correct : A. Lycopene
85. Cucurbits consumed at immature stage are grouped under:
A. Summer squashes
B. Winter squashes
C. Gourds
D. Pumpkins
Correct : C. Gourds
86. Almost all vegetables are dioeceous with respect to flower.
A. Summer
B. Winter
C. Both of these
D. None of these
Correct : D. None of these
87. Term vine yard is used for:
A. Grape plantation
B. Citrus plantation
C. Mango plantation
D. None of these
Correct : A. Grape plantation
88. Term viticulture is used for:
A. Grape cultivation
B. Citrus cultivation
C. Mango cultivation
D. None of these
Correct : A. Grape cultivation
89. Home gardening deals with vegetable production for:
A. Home consumption
B. For local market
C. At commercial level
D. All of these
Correct : A. Home consumption
90. Truck gardening means vegetable production for:
A. Distant places
B. Industry
C. Local market
D. None of these
Correct : A. Distant places
91. Tip burn of lettuce occurs at high air temperature when the soil is _______:
A. Cool
B. Dry
C. Hot
D. Wet
Correct : B. Dry
92. Organic crop cultivation is :
A. With fertilizers
B. Without fertilizers
C. With organic manures
D. None of these
Correct : B. Without fertilizers
93. Thinning in vegetables is practiced to maintain:
A. Plant x Plant distance
B. Line x Line distance
C. Both of these
D. None of these
Correct : A. Plant x Plant distance
94. Transplanting means
A. Shifting of seedlings
B. Shifting of large plants
C. Shifting of potted plants
D. All of these
Correct : A. Shifting of seedlings
95. Shrubs fall in the category of
A. 7-15 feet high
B. 25 feet high
C. More than 25 feet
D. None of these
Correct : A. 7-15 feet high
96. Deciduous plants are mostly grown in
A. Hilly area
B. In plains
C. Along rivers
D. None of these
Correct : A. Hilly area
97. Vine mean climbing/trailing plants with
A. Herbaceous stem
B. Woody stem
C. Both of these
D. None of these
Correct : A. Herbaceous stem
98. Monoecious plants have male and female sexes/flowers on
A. Same plant
B. Different plants
C. Both of these
D. None of these
Correct : A. Same plant
99. Hardy crops /plants are acclimatized against
A. Frost
B. Extreme heat
C. Both of these
D. None of these
Correct : C. Both of these
100. True fruits developed from
A. Ovary
B. Thalamus
C. Pericarp
D. All of these
Correct : A. Ovary