Horticulture MCQs for preparation

1. controlled inhibition, of seed is termed as___________________ a Priming, b Soaking, c Chilling, d None, 2. "Celery and lettuce" at high temperature, become: ____________________ a Photo dormant, b Thermo dormant, c Ecodormant, d Non dormant, 3. Excessive soil moisture, late in the season causes: _______________ 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, 4. Most of following, category crops are shallow, rooted: a Summer, b Winter, c Off season, d All , 5. Deep rooted, vegetables require:________________ a Less frequent irrigation, b More water at each irrigation, c Both a & b, d None, 6. Fruit of following, vegetables is edible: a Summer, b Winter, c Cruciferous, d All , 7. Mulches are, mainly used to reduce: ___________________ a Transpiration, b Evaporation, c Evapotranspiration, d All, 8. What type of, mulches reduce soil, temperature? a Organic mulch, b Gray polythene, c Black polythene, d Transparent polythene, 9. For hybrid seed, production _______ flowers are, completely suppressed, on female plants. a Staminate, b Pistillate, c Staminode, d Alternate, 10. Recommended cucumber, cultivars under tunnel, production technology, are: a Monoecious, b Gynoecious, c Andromonoecious, d Gynomonoecious, 11. 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, 12. "Nature of pollination" in cucurbits is:__________________ a Highly cross pollinated, b Oftenly cross pollinated, c Highly self pollinated, d None, 13. Ginger is, commonly cultivated as:____________________ a Annual, b Biennial, c Perennial, d Biannual, 14. "Cross pollination" is essential in following, type of vegetables a Monoecious, b Dioecious, c Gynoecious, d Perigynous, 15. "Cross pollination" in plants bearing, bisexual flowers is due, to: a Dichogamy, b Herkogamy, c Heterostyly, d All, 16. In anemophilous plants, pollens are disseminated, by means of: a Insects, b Water, c Wind, d Gravity, 17. In pollen development, Gametocytes induces a, problem of: a Sterility, b Viability, c Fertility, d Mobility, 18. "Production of seeds" without fertilization, is termed as:________________ a Parthenocarpy, b Parthenogenesis, c Gametogenesis, d All, 19. Most of the, hybrid watermelon, and cucumber are: a Triproid, b Diploids, c Aneuploids, d Colchiploids, 20. Removal of off, type plants from, a seed field is termed, as:________________ a Weeding, b Rouging, c Hoeing, d All , 21. The most important, seed component affecting, seed /viability during, storage is: a Temperature, b Humidity, c Moisture, d Food reserves, 22. Potato is generally, propagated through:______________________ a Seed potato, b Potato seed, c True Potato Seed, d All, 23. Isolation during, seed production is done, by: a Types (Varieties), b Plantation at a distance, c Zoning, d All, 24. The most common, pollinator insect, in Pakistan is: a Syrphid fly, b Bumble bees, c Honey bees, d House fly, 25. Seed production, in biennial vegetables, is mostly done by: a Seed to seed method, b In situ method, c Replanting method, d All , 26. Male sterility, is not due to:__________________ a Genetic factor, b Genome factor, c Cytogenetic factor, d Nutritional factor, 27. Hybrid vigor, in vegetables is manifested by:___________________ a High yield. b Uniformity in size. c Uniformityin maturity. d All, 28. Water melon, for seed should be, harvested when: a Tendrils wither, b Skin color is green, c Skin color is pale yellow, d Vines dry out, 29. In Pakistan, vegetables for seed, production are harvested by: a Manual method, b Machines, c Combine harvesters, d All , 30. During storage, of vegetable seeds, seed moisture should be: a Equal to 10%, b Greater than 10%, c None, 31. The poorest seed, storage capacity is in: a Okra, b Peas, c Cucurbits, d Onion, 32. Nitrates are, absorbed at pH below: a 5, b 6, c 7, d 8, 33. Hormones which, control apical dominance are: a Auxins, b Cytokinins, c Gibberellins, d Polyamines, 34. Tetraploid watermelon, must be pollinated by, ____ plants to produce, a seedless watermelon a Triploid, b Aneuploid, c Diploid, d Tetraploid, 35. Which vegetable, cannot be grown as an, off season vegetable: a Tomato, b Potato, c Chillies, d Cucumber, 36. Lower temperature, than normal convert, male flowers into perfect, flowers in ________ a Date palm, b Mango, c Papaya, d Citrus, 37. Tomato, is a _________ crop. a Self pollinated, b Insect pollinated, c Oftenly cross pollinated, d Wind pollinated, 38. Turmeric, is propagated by: a Corms, b Seed, c Rhizome, d Bulb, 39. Sweet potato, is propagated by: a Stem cuttings, b Tubers, c Roots, d a & b, 40. Self pollination, is a form of: a Inbreeding, b Out breeding, c Random mating, d None, 41. Cross pollination, is associated with: a Cleistogamy, b Chasmogamy, c Dichogamy, d Apogamy, 42. Completion of pollination, and fertilization in unopened, flower bud is termed as: a Chasmogamy, b Apogamy, 43. Maturation of, anthers and stigma at, the same time refers to: a Homogamy, b Chasmogamy, c Cleistogamy, d Dichogamy, 44. Fertilization, after opining of flower, refers to: a Cleistogamy, b Chasmogamy, c Homogamy, d Herkogamy, 45. Male sterility, promotes: a Autogamy, b Allogamy, c Homogamy, d Chasmogamy, 46. Exposure of seed, to low temperature before, germination is termed as : a Scarification, b Stratification, c Vernalization, d All, 47. Imbibed or germinated, seeds subjected to cold, temperature is termed as: a Scarification, b Startification, c Vernalization, d Sterilization, 48. Which of following vegetable, does not require specific, low temperature before, flowering: a Beetroot, b Cabbage, c Onion, d Brinjal, 49. Edible part, of cauliflower is: a Flowers, b Flower bud, c Vegetative bud, d Inflorescence, 50. Edible portion of, cabbage is: a Terminal bud, b Leaves, c Leaves + inflorescence, d All, 51. Cole crops, are: a Hardy, b Half hardy, c Non hardy, d Semi hardy, 52. Which of the, following crop has, lowest water contents: a Cucumber, b Watermelon, c Bottle gourd, d Cauliflower, 53. The commercial, variety of watermelon, is: a Sugar baby, b Red beauty, c Red king, d Sugary, 54. Vine of crop, of bottle gourd is, not staked during: a Summer season, b Rainy season, c Early season, d Late season, 55. Which one is, not the best source, of protein? a Potatoes, b Peas, c Beans, d Okra, 56. The cause of, hotness in Chilies is: a Cucurbitacin, b Capsaicin, c Allicin, d All, 57. Which crop is, most susceptible to, viral infection: a Chilies, b Tomato, c Onion, d Brinjal, 58. Which of the, following vegetable has, a dioecious behavior: a Onion, b Cabbage, c Bitter gourd, d Spinach, 59. Consecutive use, of garlic will reduce, the level of: a Cholesterol, b Sugar, c Uric acid, d None, 60. Bulb production ,in onion is dependent, upon: a Temperature, b Soil moisture, c Day length, d All, 61. Red colour, of carrot is due to: a Lycopene, b Carotene, c Anthocyanin, d Propanene, 62. Colour of carrot, roots is affected by: a Soil temperature, b Soil moisture, c Soil texture, d All, 63. Radish belongs, to family: a Cruciferae, b Umbelliferae, c Leguminoseae, d Poaceae, 64. For an, early harvest, cucurbits are grown, on: a Rocky soils, b Sandy soils, c Clayey soils, d Organic soils, 65. Tomato fruit, is botanically a: a Berry, b Pome, c Drupe, d Hip, 66. The portion of, axis below the cotyledons, in seed is: a Micropyl, b Hypocotyl, c Epicotyl, d None, 67. Which type of flowers, can not produce seeds, and / or fruit? a Pistillate, b Perfect, c Hermaphrodite, d Staminate, 68. Degeneration of above, ground parts in ginger, is due to: a. Senescence, b. Plant, c. Maturity, d. Partial senescence, e. Over ripening, 69. In spinach, pollination takes place, by means of: a. Water, b. Insects, c. Birds, d. Wind, 70. Tender crop cannot, tolerate a minimum, temperature of a. -2C b. All of above 71. Optimum temperature, for cool season vegetables, is: a. 25-30C 72. Which one is not, an appropriate approach to, control frost? b. Avoidance, c. Reduction of heat loss, d. Addition of heat, e. Transmittance of control, 73. Tomato, chilies and brinjal, are grouped as a. Cole crops, b. Fruit crops, c. Solanaceous crops, d. Summer crops, 74. Color development, in tomato fruit is, due to a. Lycopene, b. Carotenoid, c. Polypropylene, d. All, 75. Cucurbits consumed, at immature stage are, grouped under: a. Summer squashes , b. Winter squashes, c. Gourds, d. Pumpkins, 76. Almost all vegetables, are dioecies with, respect to flower. a. Summer , b. Winter, c. Both , d. None, 77. Term vine yard, is used for: a. Grape plantation, b. Citrus plantation, c. Mango plantation, d. None, 78. Term viticulture, is used for: a. Grape cultivation, b. Citrus cultivation, c. Mango cultivation, d. None, 79. Home gardening, deals with vegetable, production for: a. Home consumption, b. For local market, c. At commercial level, d. All , 80. Truck gardening means, vegetable production, for: a. Distant places, b. Industry, c. Local market, d. None, 81. Tip burn of lettuce occurs, at high air temperature, when the soil is _______: A. s, b. Dry, c. Hot, d. Wet,

Horticulture MCQs for preparation

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