Agricultural_2600_MCQs_Template_Highlighted

Agricultural (Agronomy) MCQs 1. When crop plants adopt to a new environment are called___________________? A. Accaumatization B. Domestication C. Selection D. Introduction 2. The organisms which do not prepare their own food and depend on the dead organisms are called_____________________? A. Saprophytes B. Parasites C. Obligatory parasites D. Bacteria 3. Plants that can tolerate drought are_________________? A. Xerophytes B. Trunk plants C. Hydrophytes D. None of the above 4. The branch of Science which deals cultivation of land is called________________? A. Geology B. Agriculture C. Horticulture D. Petrology 5. Botanical name of American cotton is_________________? A. G. hirsutum B. G. arborium C. G. barb dense D. Non of these 1 6. Gassypium arborium is__________________? A. Tetraploid B. Diploid C. Triploid D. Haploid 7. Gassypium herbaceum was originated in______________? A. Ethipia and South Africa B. Kenya and South Africa C. Indonesia and Central America D. South Mexico and Central America 8. Gassypium hirsutum was developed from a cross between________________? A. G.arbarieum and G. rainmundii B. G.arbarieum and G.thurberii C. G.arbarieum and G.barbadense D. G.arbarieum and G.herbaceum 9. In China, cotton was cultivated as a crop in._______________? A. 7 th century AD B. 4 th century AD C. 10 th century AD D. 5 th century AD 10. Cotton ginning machine was invented by_______________? A. William Black B. Withey C. Thomas Hough ten D. Thomas Wilson 11. Among the cotton exporting countries the number of Pakistan is_______________? 2 A. 1 st B. 2 nd C. 3 rd D. 4 th 12. On the basis of yield of cotton per hectare which of the following country occupies first position ? A. Pakistan B. America C. Australia D. India 13. On the basis of cotton cultivated area which on of the following countries occupies first position ? A. Pakistan B. India C. America D. China 14. In 1991-92 the record production of cotton in Pakistan was_______________? A. 12800,000 bales B. 1200,000 bales C. 1000,000 bales D. 1100,000 bales 15. CLCV stands for__________________? A. Cotton leaf cover virus B. cotton leaf curl virus C. cotton leaf cotton virus D. cotton leaf complete virus 16. Cotton plant belong to one of the following categories______________? 3 A. C4 plant B. CAM plant C. C3 plant D. non of these 17. Cotton plant has a mode of germination______________? A. Hypogeal germination B. Epigeal germination C. Both of the above D. non of these 18. Cotton is a crop of_______________? A. Tropical region B. Sub-tropical region C. Both A and B 19. Bacillus thuringensis season cotton is a________________? A. Virus B. Bacteria C. Fungi D. non of these 20. Optimum pH for cotton plant lies between______________? A. 5.2 to 9.0 B. 5.2 to 7.0 C. 3.5 to 5.5 D. non of these 21. The unproductive branches of cotton are called_________________? A. Sympodial branches B. Monopodial branches C. Vegetative branches 22. Seed rat of American cotton per acre is__________________? 4 A. 10-12 kg B. 6-8 kg C. 15-18 kg D. non of these 23. Recommended method for cotton sowing is________________? A. Broad cast method B. Drill method C. Ridge sowing method D. non of these 24. Best time of sowing for cotton is______________? A. Mid March to mid April B. Mid May to mid July C. Mid June to mid July D. non of these Page 1 of 11825. Number of irrigation required for cotton crop are______________? A. 5 irrigations B. 6 irrigations C. 8 irrigations 26. An example of monocot fiber yielding plant is_________________? A. Cocos B. Clemates C. Corchorus D. Crotalaria 27. Major source of sugar in world is_________________? A. Dates B. Beet root 5 C. Water melon D. Sugarcane 28. The depth of water required by crops during the base period is called_____________________? A. Frequency of water B. Acre inch C. Duty of water D. Delta of water 29. The heating of atmosphere by gases that are transparent to sun light but opaque to radiated heat is called________________? A. Green house effect B. Pollution C. Warming D. Solar radiation 30. The total dry matter produced by a plant as a result of photosynthesis is called_________________? A. Biological yield B. Harvest index C. Dry matter D. Crop growth 31. The application of fertilizer nutrients in proportions best suited to the needs of the crop is called_________________? A. fertilizer placement B. fertilizer use efficiency C. Nitrogen use efficiency D. Balanced fertilization 6 32. Soil water in excess of hygroscopic and capillary water which moves downward through the soil by the force of gravity is called______________? A. Capillary water B. sub-surface water C. Gravitational water D. Run off water 33. Weedicides that kill the foliage of weeds by direct contact are as________________? A. Trifluration B. Paraquet C. Bromoxy nil D. Loxynil 34. The living together of two or more species in a prolonged and intimate ecological relationship is called________________? A. Symbiosis B. Biosystem C. Auto environment D. Climate 35. Pulling of off- type plants from a cropped field is called___________________? A. Rouging B. Weeding C. Pruning D. None of the above 36. The ratio of actual cultivated area to a total farm area over a year is called__________________? 7 A. Cropping pattern B. Cropping intensity C. Cost-benefit ratio D. None of the above 37. The wearing away of the land surface by wind, water, ice or other geological agent is called__________________? A. Seepage B. Soil conservation C. Erosion D. fertility depletion 38. The harmful influence of one living plant on another living plant by the secretion of a toxic substance is called________________? A. Allergy B. Allelopathy C. Parasitism D. Antagorusm 39. Which one of the following constitute the best defamation of fruit________________? A. A fruit is a product of flower B. A fruit is a product of ovary C. A fruit is a mature ovary that contain seed D. A fruit is post-fertilization product of the pistil 40. Barani Agriculture institute is located at _________________? A. Peshawar B. Islamabad C. Rawalpindi D. Chakwal 41. Certification is not required for________________? 8 A. Nucleus seed B. Breeder seed C. Foundation seed D. Certified seed 42. Seeds which dried at low moisture contents and stored at low temperature without loosing their viability are________________? A. Recalcitrant seeds B. Active seeds C. Orthodox seeds D. Certified seeds 43. Prescribed germination percentage of foundation seed of ground nut is_________________? A. 70 B. 20 C. 85 D. 90 44. Indus river is one of the longest river of Asia measuring about_____________________? A. 3000 Km B. 2500 Km C. 2900 Km D. 3200 Km 45. Main reason behind the shedding of flower in cotton is__________________? A. Low temperature B. High temperature C. Humidity D. Cloudy day 9 46. Root rot of cotton is a_________________? A. Bacterial disease B. Viral disease C. Fungal disease 47. Raising of only one crop in a year, when there is seasonal supply of water is called______________? A. Monocropping B. Monoculture C. Specialized farming D. Intensive cropping 48. Effects of allelopathic compound in the life cycle of plants cause inhibition of________________? A. Seed deterioration B. seed germination C. Seed swelling D. non of these Page 2 of 11849. Annual rye grass releases a chemical through its root that prevents________________? A. Crop seeds B. weed seed C. Both a and b D. non of these 50. Allelopathy is an important component in the development of future integrated strategies for____________? A. Soil management B. Weed management C. Water management D. non of these 10 51. Allclopatluc interactions in general and the allelochemicals in particular are viewed as an important tool for_______________? A. Pest and insect management B. Disease and pest management C. Weed and pest management D. non of these 52. Plants which grow on dry region are____________________? A. Xerophytes B. Thermophytes C. Hydrophytes D. Haplophytes 53. Crop rotation means growing_________________? A. Same craps B. Growing green manures C. Growing different crops D. Growing fodder crops 54. Critical factors for crop production is________________? A. Land B. Water C. Pure seed D. fertilizer 55. One hectare is equal to___________________? A. 3.47 acre B. 2.471 acre C. 1.71 acre D. 1.9 acre 56. The climates of sindh province comes under__________________? 11 A. tropical B. Temperature C. Sub tropical D. all 57. The soil has got______________? A. Six horizons B. Five horizons C. Seven horizons D. Two horizons 58. The management of kind by planting a series of crops, pastures or following to maximize production with sustaining land quality is called_______________? A. Crop rotation B. Crop sequence C. Cropping system D. Crop management 59. Crop ideotype refers to________________? A. Model plant type B. Good plant type C. Ideal plant type D. All the above 60. The experimental design which control fertility level in two directions is known as________________? A. RBD B. SPD C. AD D. LSD 61. Drought is measuring in terms of________________? 12 A. Yield performance B. Photosynthesis C. Root length of seeding D. All the above 62. Soil reaction of preference of sugarcane is________________? A. 6.00 pH B. 7.03 pH C. 8.00 pH D. 6.5 pH 63. There has been emphasis on the conservation of wild relatives of cultivated plants because wild plants________________? A. Grow better then cultivated plants B. Serve, as valuable fodder plants C. Needed to understand the origin of cu;cultivated plants D. Carrying many useful genes which are lost in cultivated plants 64. The process of converting food nutrients to carbohydrates in plants is called________________? A. Metabolism B. Photosynthesis C. Absorption D. Assimilation 65. Plants which change from the vegetative to the reproductive stage by producing flowers and fruits when the day become longer is called________________? A. Long day plants B. Short day plants C. Photoperiod D. Phototropism 13 66. The cotton plant sheds more fruits mainly due to_________________? A. More number of irrigations B. Higher temperature C. Higher dose of fertilizer D. Insects and pest 67. Dwarf varieties of wheat are more resistance to_______________? A. Disease B. Insect pest C. Lodging D. Viruses 68. Yield losses of rice crop due to weed infestation are___________________? A. 10-20% B. 5-15% C. 20-50% D. 20-60% 69. Wheat is predominantly________________? A. Self pollinated crop B. Often cross pollinated crop C. Cross pollinated crop D. Apomictie crop 70. Growing more then one crop in a season in the same land is called________________? A. Monocropping B. Double cropping C. Intensive cropping D. Intercropping 14 71. A condition of green plants in which they become unhealthy and pale fellow in colour is known as_________________? A. Chromoplast B. Leucoplast C. Chlorosis D. Chromoplast Page 3 of 11872. The crop which are cultivated for grain purposes are called_________________? A. Fodder crops B. Cereal crops C. Fiber crops D. Leguminous crops 73. The best soil for cotton cultivation is_________________? A. Sandy soil B. Loamy soil C. Silty soil D. Clay loam soil 74. The herb plants have___________________? A. Woody stem B. Non-woody stem C. Trunk D. All the above 75. Water courses are lined to avoid_________________? A. Transpiration B. Evaporation C. Seepage D. Erosion 76. Progeny of nucleus seed is called_________________? 15 A. Basic seed B. Breeder seed C. Foundation seed D. All the above 77. Use of tetrazolium staining for assessment of seed quality was suggested by________________? A. Woodstock (1973) B. Moore (1973) C. Maguire (1962) D. Germ (1950) 78. A method of control of pests in which natural predators and parasites are used without causing serious adverse environmental side effects is called_________________? A. IPM B. Allelopathy C. Insect control D. Chemical control 79. The transport of a substance across a biological membrane against a concentration gradient is called___________________? A. Passive transport B. Active transport C. Absorption D. Dissolution 80. Number of crops grown on the same piece of land in a year and expressed in percentage is known as_______________? A. Cropping pattern B. Cropping index 16 C. Crop rotation D. Cropping intensity 81. In Pakistan, the total length of canal system exceeds________________? A. 59000 Km B. 52000 Km C. 58000 Km D. 60000 Km 82. In Pakistan the area effected due to water erosion is about_________________? A. 12 million to B. 13.05 million lia C. 22 million ha D. 15 million lva 83. The K is predominantly in______________? A. Leaves B. Straw C. Grain D. All the above 84. Low soil pH is the indication of_______________? A. High Mg and Ca B. High N and S C. Low N and Ca D. Moderate Mg and Ca 85. N mineralization is effected by soil pH_______________? A. Below 6 B. Above 6 C. Above 10 D. None of the above 17 86. In wheat total crop P uptake per ton of gram is about;__________________? A. 5-20 Kg B. 2-3Kg C. 5-7 Kg D. 20-25 Kg 87. 2,4-d is synthetic herbicide derived from_______________? A. Amino acid B. Valine C. Auxins D. Cytokmins 88. Penetrometer are used for measuring__________________? A. Soil tilth depth B. Soil moisture C. Soil compaction D. Soil seepage 89. Excess of nitrogen to plants causes_________________? A. Delay in ripening B. Delay in growth C. Delay in germination D. All the above 90. Root nodules in plants help in___________________? A. Photosynthesis B. aeration C. Nitrogen fixation D. Respiration 91. Green revolution came into being due to evolution of_________________? 18 A. Wheat varieties B. Sugarcane varieties C. Cotton varieties D. All the above 92. The major source of foreign exchange earning is________________? A. Wheat B. Sugarcane C. Cotton D. Jute 93. The enzyme responsible for biological nitrogen fixation is________________? A. Lipase B. Nitrogenase C. Isomerase D. Kinease 94. The equipment used for separating, cleaning and grading small seeds from given sample is______________? A. Seed blower B. Seed sorter C. Seed divider D. a and b 95. Geographical area of Pakistan in million hectare is_______________? A. 60 B. 80 C. 95 D. none of the above 19 96. Removal of cellular water followed by shrinkage of protoplasm is due to A. Oxidation B. Deplasmolysis C. Osmosis D. Plasmolysis Page 4 of 11897. Accumulation of transported material A to B horizon is known as____________________? A. Eluviation B. llluviation C. Alluviation D. Deposition The ratio of actual cultivated’ area to a total f 98. arm area over the year is called __________________? A. Cropping pattern B. Cropping intensity C. Cost benefit ratio D. Cropping system 99. Plants grown in dry region are_________________? A. Xerophytes B. Thermophyts C. Mesophytes D. Halophytes 100. Solar energy emitted by sun reaches the earth surface absorbed and returned back in the form of___________________? A. Infra blue radiation B. Infra red radiation 20 C. X rays D. None of the above 101. Green vegetables are the source of___________________? A. Biotin B. Carbohydrates C. Folate D. Vitamin 102. A gas produced by anaerobic decomposition of organic compounds is called as_________________? A. Ethane B. Methane C. Ammonia D. CO 2 103. Fumigating and warming soil by covering it with black plastic is called__________________? A. Mulching B. Fumigation C. Soil solarization D. None of the above 104. Simple plains that lack photosynthesis pigments are called as_________________? A. Fungi B. Bacteria C. Virus D. None of the above 105. Organisms which feeds on dead and decaying organisms are called as_________________? A. Saprophytes B. Halophytes 21 C. Xerophytes D. All the above 106. The Indus basin irrigation system has__________________? A. 11 Barrages B. 19 Barrages C. 25 Barrages D. 41 Barrages 107. Field capacity and permanent wilting point are different indifferent_______________? A. Crops B. Soils C. Seasons D. Regions 108. Losses of soil moisture vapour form is called as_________________? A. Evaporation B. Transpiration C. Translocation D. Both A and B 109. The actual amount H2O present in the air is called_____________? A. Relative humidity B. Absolute humidity C. Both A and B D. non of these 110. The crops which are grown to reduce the soil erosion and natural losses by leaching is known as______________? A. Companion crops B. Cover crops 22 C. Mixed crops D. Ratooning crops 111. Sugar beet belongs to family ? A. Poaceae B. Cucurbitaceae C. Chenopodiaceae D. non of these 112. PASSCO stands for_______________? A. Pakistan Agriculture Sugar Supplies Corporation B. Pakistan Agriculture Seed Supplies Corporation C. Pakistan Agriculture Service Supplies Corporation D. non of these 113. When the course of water is blocked at some places if is called___________________? A. Lake B. Dam C. River D. Head works 114. Which province the only source of income is livestock grazing in range lands_______________? A. Punjab B. NWFP C. Balochistan D. Sindhi 115. Hot with a cool winter is___________________? A. Temperature B. Arid C. Subtropical D. None of the above 23 116. A long severe winter and short summer is called_________________? A. Arctic B. Sub-temperature C. Semiarid D. Semi arctic 117. AZR1 is___________________? A. Arid zone research institute B. Agriculture zonal research institute C. Attock Zonal research institute D. None of the above 118. In Raygistan area which districts of Sindh are included______________? A. Karachi B. Hyderabad and N.Shah C. Sukkar and. Khairpur D. None of the above 119. What is catchment____________________? A. An area which drains in to pond B. An area of woody plantation C. Ail area of waterlogged condition D. None of the above 120. The environment where an organism lives is__________________? A. Habitat B. Logging C. Girding D. None of the above 24 Page 5 of 118121. The plants which grown on stream bank are__________________? A. Pheritophytes B. Bryophytes C. Xerophytes D. None of the above 122. A region with an annual rain fall of less than 10 inches comes under_________________? A. Arid climate B. Semi arid climate C. Wet climate D. Temperature 123. The role of boron and zinc has been recognized in crop_________________? A. Mustard B. Sugarcane C. Rice D. None of these 124. In fanning system cultivation of two or more crops is known as_______________? A. Sequential cropping B. Strip cropping C. Multiple cropping D. All the above 125. In pulses, for the production of nucleus seed we require minimum of_________________? A. 300 plant progenies B. 400 plant progenies 25 C. 500 plant progenies D. 200 plant progenies 126. Breeders seed production is taken up from the nucleus seed B and A lines are pollinated in an isolation of 1 Km in a ratio of_________________? A. 1:2 B. 1:3 C. 1:4 D. 1:5 127. Who described. the use of letrazolium for assessing, seed quality and the basis of topographical patterns___________________? A. Moore (1973) B. Burries etc (1969) C. Maguare (1962) D. Kotowski (1926) 128. Who showed a positive correlation between tetrazolium staining with seed quality in soybean seeds ? A. Maguire (1963) B. Barries ei al. (1969) C. Moore (1973) D. Woodstock (1976) 129. Who gave the formula for mean germination time? A. Nicolls &Heydecker (1968) B. Kotowski (1962) C. Baskin (1972) D. Maguire (1962) 130. Who gave the formula for coefficient of velocity of germination ? 26 A. Kotowski (1926) B. Germ (1949) C. Deloucle & Baskin (1972) D. Moore (1973) 131. genetic purity of seed is determined by________________? A. Ageing test B. Grow out test C. Tz test D. All the above 132. The seed dormancy of rice seed can be broken by putting into the oven at____________________? A. 50°c for 5 hrs B. 53°c for 6 hrs C. 45°c for 6 hrs D. none of the above 133. High density grains are found mostly at___________________? A. Top of panicle B. Middle of panicle C. Bottom of panicle D. All the above 134. Better crop establishment especially for direct seeded rice can be obtained by using________________? A. High density grain B. Low density grain C. Both a & b D. None of the above 135. The higher leachate conductivity is associated with__________________? 27 A. Mature seeds B. Immature seed? C. Abnormal seeds D. All the above 136. Vigor index of seedings in rice can be determined on___________________? A. Quantitative basis B. Qualitative basis C. Both a & b D. None of the above 137. Electrolytes leakage is defendant on_________________? A. Condition of cell membrane B. Cracking of seed test C. Both a & b D. None of the above 138. Azolla which fixes nitrogen in rice field is__________________? A. Bacteria B. Fungi C. Ferm D. None of the above 139. The CO, content of air is___________________? A. 1% B. 10.3% C. 0.03% D. 0.002% 140. Sowing seed without any tillage in the soil is called__________________? 28 A. Minimum tillage B. Zero tillage C. Secondary tillage D. None of the above 141. Fertilizer application before seed sowing is called__________________? A. Top dressing B. Broadcasting C. Basal application D. Drilling 142. Zinc deficiency is generally observed in_________________? A. Wheat B. Vegetables C. Race D. Cotton 143. Mutual association between fungi and roots of plants is known as_________________? A. Rhizospher B. Mycorrhizae C. Root fungi D. None of the above 144. Plants adopted to arid regions are___________________? A. Mesophytes B. Hydrophytes C. Xerophytes D. Aridic plants 145. The plants which, grow neither in dry nor in wet condition are_______________________? 29 A. Xerophytes B. Amphibiophytes C. Mesophytes D. Hydrophytes Page 6 of 118146. The soil are contains__________________? A. Less oxygen as compared 10 atmosphere B. More carbon dioxide as compared to atmosphere C. Both a & b D. None of the above 147. The vegetation found on high altitude mountain is__________________? A. Alpine vegetation B. Tundra vegetation C. Conferous vegetation D. None of the above 148. A nutrient element is said to be essential if___________________? A. Plants can not complete their life cycle in absence of that element B. Nutrients has some physiological function in metabolism of plant C. Deficiency symptoms can be removed by application of that putrid D. All the above 149. Organic farming, is a copping system in which__________________? A. Fertilizers and pesticides are widely used B. Fertilizers and pesticides are net used C. Farm yard manure r not used D. Green manuring 30 150. Which one of the following is a major fiber crop of Pakistan ? A. Sugarcane B. Cotton C. Sesame D. Jute 151. The Cotton plant belong to family ? A. Gramineae B. Fabaceae C. Malvaceae D. Leguminaceae 152. Gassypium hirsutum is________________? A. Tetraploid B. Diploid C. Triploid D. Hexaploid 153. Genus of cotton is___________________? A. Hirsutum B. Triticum C. Gassypium D. Hordeunt 154. Gassypium barbadense was originated in__________________? A. Central and North America B. Central and South America C. Central and South Asia D. North Mexico and North America 155. Gassypium barbadense was developed from a cross between__________________? 31 A. G. herbaceum and G. raimondii B. G. arborieum and G. raimondii C. G. hirsutum and G. raimondii 156. England cotton was imported from the time in__________________? A. 1430 AD B. 1435 AD C. 1530 AD D. 1500 AD 157. First ginning machine was invented in_______________? A. 1893 AD B. 1880 AD C. 1793 AD D. 1650 AD 158. Among the cotton exporting countries the number of America is___________? A. 1 st B. 2 nd C. 3 rd D. 4 th 159. Among the cotton exporting countries the number of China is________________? A. 1 st B. 2 nd C. 3 rd D. 4 th 160. On the basis of yield of cotton per hectare which of the following country occupies second position______________? 32 A. Pakistan B. Turkey C. China D. non of these 161. Delta pine variety of cotton was imported in Pakistan in the year______________? A. 1970 B. 1968 C. 1971 D. 1978 162. In 1992-93 the greatest decrease in the production of cotton was due to attack of_____________? A. American boll worm B. CLCV C. Spotted boll worm D. Aphids 163. APTMA stands for_____________________? A. All Pakistan textile mills association B. All Pakistan trade monitoring association C. All Pakistan trade monitoring agency D. All Pakistan textile mill management authority 164. Cotton plant has mode of germination_________________? A. Determinate type of growth B. Indeterminate type of growth C. Semi-determinate D. Buslry growth habit 165. The root of cotton plant goes up to depth of_________________? 33 A. 2-3 ft B. 4-6 ft C. 8-10 ft D. non of these 166. In B.T cotton B.T. stands for__________________? A. Bacillus thuringensis B. Bemisia tabaci C. Bemisia trachyplerus 167. On the basis of season cotton is a__________________? A. Kharif crop B. Rabi crop C. Zaid Kharif crop 168. The productive branches of cotton are called________________? A. Monopodial branches B. Sympodial branches C. Fruiting branches D. non of these Page 7 of 118169. CCRI stands for_______________? A. Cotton crop research institute B. Center for crop research institute C. Central cotton research institute D. non of these 170. Seed rate of cotton per acre is________________? A. 10-22 kg B. 5-6 kg C. 14-21 kg 171. In cotton the recommended R x R distance is_________________? 34 A. 75 cm B. 90 cm C. 45 cm 172. Delta of water for cotton crop is________________? A. 30 acre inches B. 25 acre inches C. 18 acre inches D. non of these 173. Which is the most important cereal crop of temperature region________________? A. Paddy B. Maize C. Wheat D. Barley 174. One of the plant introduced from new world to the old world is_________________? A. Rice B. Wheat C. Sugarcane D. Potato 175. The leguminous plants are important in agriculture because_________________? A. They need very little water to grow B. Six crops are harvested in a year C. They are disease resistant D. Help in nitrogen economy of nature 176. Percentage of area irrigated by a cusec of water during the season is called_______________? 35 A. Intensity B. Base period C. Cusec D. Irrigation frequency 177. Ratio of crop yield to the amount of water utilized is called______________? A. Soil water use B. Crop water use efficiency C. Soil plant water relationship D. Water intensity 178. Plants having no defined limits of vegetative and reproductive element is called______________? A. Absolute growth B. Assimilation C. Indeterminate growth D. Determinate growth 179. The control and preservation of natural resources for present and future use is called_________________? A. Sustainability B. Conservation C. Crop residue management D. None of above 180. Ratio of economic yield to biological yield expressed in percentage is called_______________? A. Harvest index B. Seed index C. Total yield D. Dry matter 36 181. The practice of producing two successive crops of same species from same piece of land in one year is called_________________? A. Intercropping B. Doubling cropping C. Monocropping D. Cropping pattern 182. The amount of water required to rise a crop to matunty with in a given period of time is called________________? A. Water frequency B. Water depletion C. Water balance D. Crop Water requirement 183. A region with an annual rainfall less than 10 inches comes under_________________? A. And climate B. Semi-and climate C. Wet climate D. None of the above 184. The negative logarithm of the hydrogen ion concentration, a measure of the acidity of a solution is called_______________? A. pH B. EC C. Cl D. Saliruiy 185. International institute for Tropical Agriculture is located at________________? 37 A. Mexico B. Nigeria C. Syria D. Columbia 186. In Bindi, production of foundation seed needs an isolation distance of__________________? A. 100 meters B. 50 meters C. 200 meters D. 3 meters 187. In Sunflower, production of foundation seed requires as isolation distance of__________________? A. 400 meters B. 800 meters C. 200 meters D. 100 meters 188. Breeder seed is the progeny of_____________________? A. Certified seed B. Nucleus seed C. Foundation seed D. Registered seed 189. In wheat, production of certified seed needs an isolation distance of____________________? A. 5 Meters B. 4 Meters C. 3 Meters D. 2 Meters 190. Total cropped area of Sindh is___________________? 38 A. 2.8 million hac B. 3.75 million hac C. 4.00 million hac D. 4.5 million hac 191. One of the following insect act as a vector for CLCV________________? A. White fly B. Aplud C. Jassid D. Heliothus 192. Causal organism of root rot of cotton is_____________________? A. Rhizoeionia solani B. Rhizoctonia bataticola C. Both of them Page 8 of 118193. IPM stands for_________________? A. International pest management B. Interior pest management C. Integrated pest management D. non of there 194. Allelopathy interaction between plants playa crucial role in___________________? A. Ecosystems B. Community C. Both a and b D. non of there 195. Allelochemicals are used as growth regulators and natural pesticides to promote__________________? 39 A. Sustainable agriculture B. Improve agriculture C. Both a and b 196. Sunflower is allelopathic crop to many____________________? A. Microorganisms B. Weeds C. None of the above 197. Allelocliemicals may enter in the soil through the process of_________________? A. Diffusion B. Mass flow C. Root exudation 198. The allelochemicals are broadly classified as_______________? A. Cytokinin and ethylene B. Phenolics and. terpenoids C. Trytophan D. non of there 199. The pH of urea fertilizer is _________________? A. 4.00 B. 3.5 C. 8.0 D. non of these 200. A good source of vegetable protein is________________? A. Com B. Egg C. Pulses D. non of there 201. What do you mean by WTO__________________? 40 A. World trade organization B. Western training organization C. World trade order D. non of there 202. Conducting experiments in glasses is called________________? A. Invitro B. Invivo C. In-ova D. In-sin 203. Auxins and cytokinins are__________________? A. Growth regulators B. Herbicides C. Insecticides D. Fungicides 204. The series of transformation which a nutrient undergoes in the biosphere before returning to its original formed is called_______________? A. Carbon cycle B. Nutrient cycle C. Nitrogen cycle D. None of the above 205. In pulses, limiting amino acids are__________________? A. Lysine B. Theronine C. Tryptophan D. Methionine 206. The ratio of treatment variance to error variance is known as_________________? 41 A. Correlation B. F-value C. Critical difference D. I-value 207. The significance of difference among several means is tested with the level of_________________? A. F-test B. t-test C. Z-test D. X-test 208. Melilotus alba is objectional weed of__________________________? A. Okra B. Methi C. Cucurbits D. Wee 209. Which one of the following is C4 plain_________________? A. Sugarcane B. Sorghum C. Make D. All the above 210. The lowest pest population that will cause economic damage is called__________________? A. Economic pest B. Economic threshold C. Economic damage D. None of the above 211. Gaseous loss of a substance from the soil or from fertilizer or manure is called_________________? 42 A. Volatilization B. Evaporation C. Transpiration D. Evapotranspiration 212. Resistance of plants to living organism is called______________________? A. Abiotic resistance B. Biotic resistance C. Vertical resistance D. Horizantal resistance 213. A foreign variety that is directly recommended for commercial cultivation is called_________________? A. Blended variety B. Pure line variety C. Exotic variety D. Hybrid variety 214. Integrated pest management involves________________? A. Chemical and cultural method B. Only chemical control method C. Chemical, cultural, and biological method D. Only biological method 215. A crop grown on residual moisture after harvesting rice is called__________________? A. Barani crop B. Dubari crop C. Ratoon crop D. Sure crop 216. Agro ecological regions of sindh are_____________________? 43 A. 5 B. 3 C. 4 D. 1 B. Fertilizer requirements of wheat under medium loamy soil is________________? 75-90 NP kg/ha B. 100-70 NP kg/ha C. 110-60 NP kg/ha ✔ D. 136-85 NP kg/ha Page 9 of 118217. There is________________? A. 43560 Sq ft in an acre B. 40560 Sq ft in an acre C. 46560 Sq ft in an acre D. 47560 Sq ft in an acre 218. Root nodules in plant help in__________________? A. Photosynthesis B. Aeration C. Nitrogen fixation D. Respiration 219. Part of embryonic axis which develops into root is called___________________? A. Plumule B. Radicle C. Coleoptile D. Coleorluza 220. Tillage is field operation which help in cutting, loosening and inverting the soil for_________________? A. Fertilization B. Irrigation 44 C. Seed bed preparation D. Transplantation 221. Foliar application of nitrogen means applying nitrogen in solution form to___________________? A. Whole plant B. Leaves C. Stem only D. Flowers only 222. The available form of nitrogen for plants is_________________? A. NO 3 B. NH 4 C. Both a and b D. non of these 223. Natural water as pH equal to________________? A. 1 B. 4 C. 9 D. 1 224. A method of estimating seed vigour on the basis of color intensity o the stained seeds was described by______________? A. Germ and Keitreiber (1954) B. Kittock and Law (1963) C. Maguire (1963) D. Moore (1973) 225. genetic purity is assessed through________________? A. Inspection B. Seed testing 45 C. Germination D. All the a b c 226. Hybrid seeds are developed because they_________________? A. Produce better crop B. Provide greater vigour C. Are more uniform D. All the above 227. The systematic arrangement of soil in to groups or categories is called_________________? A. Classification B. Annuals C. Perennials D. Ranking 228. One rooting hormone occurring naturally in plant is ___________________? A. Indolebutyric B. Indolacetic acid C. Naphthalene acetic acid D. None of the above 229. The contribution of agriculture in the GDP of the country is____________________? A. 25% B. 35% C. 30% D. 40% 230. Pakistan has a total forest area of about_________________? A. 22 million ha B. 32 million ha 46 C. 12 million ha D. 20 million ha 231. The sever salinity problem has taken lands out of production as___________________? A. 50% B. 10% C. 45% D. 30% 232. In wheat total crop N uptake per ton of grain is about__________________? A. 50-60 Kg B. 20-30 Kg C. 15-20 Kg D. 70-80 Kg 233. Two much Mg may create deficiency for_____________________? A. P B. Ca C. N D. K 234. The contact herbicides are less effective to_________________? A. Broad leaved weeds B. Perenial plants C. Seasonal plants D. All the above 235. Tensiometer is used for measuring____________________? A. Soil moisture B. Water pressure 47 C. Wind pressure D. None of the above 236. Mg in plants act as___________________? A. Protein activator B. Enzyme activator C. Starch activator D. None of the above 237. The given off water vapours from the surface of leaves is called________________? A. Transpiration B. Respiration C. Exudation D. Evaporation 238. A crop grown on residual moisture after harvesting rice is called__________________? A. Barani crop B. Dubari crop C. Ratoon crop D. Sure crop 239. The value of regression and correlation is the same when the correlation between two variables is_________________? A. Imperfect B. Perfect C. Positive D. Negative 240. Hitting the seed with force against a hard surface to break seed dormancy is called_______________? 48 A. Impaction B. Abrasion C. Stratification D. Scarification 241. Seed bag labeled with white colour indicates_________________? A. Certified seed B. Basic seed C. Pre-basic seed D. Pure seed 242. The substance that an enzyme acts upon is known as___________________? A. Product B. Substrate C. Mycotoxin D. None of the above Page 10 of 118