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1) 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
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2) Ratio of economic yield to biological yield expressed in percentage is called_______________? a. Harvest index b. Seed index c. Total yield d. Dry matter
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3) 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
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4) 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
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5) 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
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6) 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
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7) International institute for Tropical Agriculture is located at________________? a. Mexico b. Nigeria c. Syria d. Columbia
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8) In Bindi, production of foundation seed needs an isolation distance of__________________? a. 100 meters b. 50 meters c. 200 meters d. 3 meters
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9) In Sunflower, production of foundation seed requires as isolation distance of__________________? a. 400 meters b. 800 meters c. 200 meters d. 100 meters
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10) Breeder seed is the progeny of_____________________? a. Certified seed b. Nucleus seed c. Foundation seed d. Registered seed
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11) In wheat, production of certified seed needs an isolation distance of____________________? a. 5 Meters b. 4 Meters c. 3 Meters d. 2 Meters
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12) Total cropped area of Sindh is___________________? a. 2.8 million hac b. 3.75 million hac c. 4.00 million hac d. 4.5 million hac
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13) One of the following insect act as a vector for CLCV________________? a. White fly b. Aplud c. Jassid d. Heliothus
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14) Causal organism of root rot of cotton is_____________________? a. Rhizoeionia solani b. Rhizoctonia bataticola c. Both of them
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15) IPM stands for_________________? a. International pest management b. Interior pest management c. Integrated pest management d. non of there
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16) Allelopathy interaction between plants playa crucial role in___________________? a. Ecosystems b. Community c. Both a and b d. non of there
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17) Allelochemicals are used as growth regulators and natural pesticides to promote__________________? a. Sustainable agriculture b. Improve agriculture c. Both a and b
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18) Sunflower is allelopathic crop to many____________________? a. Microorganisms b. Weeds c. None of the above
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19) Allelocliemicals may enter in the soil through the process of_________________? a. Diffusion b. Mass flow c. Root exudation
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20) The allelochemicals are broadly classified as_______________? a. Cytokinin and ethylene b. Phenolics and. terpenoids c. Trytophan d. non of there
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