952. Sowing seed without any tillage in the soil is called__________________?
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A. Secondary tillage

B. None of the above

C. Minimum tillage

D. Zero tillage
953. Root nodules in plant help in__________________?
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A. Aeration

B. Respiration

C. Nitrogen fixation

D. Photosynthesis

954. Global gene bank of Potato is located at_____________________?
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A. Columbia

B. None of the above

C. CIP Peru

D. Florida

955. Drip method of irrigation is not suitable to close spaced crops because_________________?
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A. High water requirements

B. High pump pressure

C. High cost on pipes

D. Unavailable of technology

956. Controlled run off, water supplies, irrigation, soil fertility is called as_________________?
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A. Catchmento protection

B. Agriculture conservation

C. Saw logs

D. Soil protection

957. The best soil for cotton cultivation is_________________?
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A. Clay loam soil

B. Loamy soil

C. Silty soil

D. Sandy soil

959. Hot with a cool winter is___________________?
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A. Subtropical

B. None of the above

C. Arid

D. Temperature

963. 2,4-d is synthetic herbicide derived from_______________?
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A. Auxins

B. Cytokmins

C. Amino acid

D. Valine

965. Green revolution came into being due to evolution of_________________?
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A. All the above

B. Cotton varieties

C. Sugarcane varieties

D. Wheat varieties
968. There is________________?
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A. 47560 Sq ft in an acre

B. 43560 Sq ft in an acre

C. 40560 Sq ft in an acre

D. 46560 Sq ft in an acre

969. The available form of nitrogen for plants is_________________?
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A. NO<sub>3</sub>

B. NH<sub>4</sub>

C. Both a and b

D. non of these

972. Partially decomposed organic matter is termed as___________________?
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A. All the above

B. Composet

C. Farm yard manure

D. Humus

973. Integrated pest management involves________________?
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A. Only biological method

B. Chemical and cultural method

C. Only chemical control method

D. Chemical, cultural, and biological method
975. Mutual association between fungi and roots of plants is known as_________________?
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A. Rhizospher

B. Mycorrhizae

C. None of the above

D. Root fungi

977. Electrolytes leakage is defendant on_________________?
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A. Condition of cell membrane

B. Cracking of seed test

C. Both a & b

D. None of the above

978. Low soil pH is the indication of_______________?
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A. High N and S

B. Low N and Ca

C. High Mg and Ca

D. Moderate Mg and Ca

980. Organic farming, is a copping system in which__________________?
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A. Fertilizers and pesticides are net used

B. Green manuring

C. Farm yard manure r not used

D. Fertilizers and pesticides are widely used

983. IPM stands for_________________?
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A. non of there

B. Interior pest management

C. Integrated pest management

D. International pest management

986. A nutrient element is said to be essential if___________________?
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A. Deficiency symptoms can be removed by application of that putrid

B. Plants can not complete their life cycle in absence of that element

C. Nutrients has some physiological function in metabolism of plant

D. All the above
987. The total dry matter produced by a plant as a resulting photosynthesis is called_______________?
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A. Mass

B. Physical productivity

C. Biological yield

D. None of the above

988. A region with an annual rain fall of less than 10 inches comes under_________________?
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A. Semi arid climate

B. Wet climate

C. Arid climate

D. Temperature

989. Among the important green house gases two are found in higher concentration________________?
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A. Carbon and nitrogen oxide

B. None of the above

C. Methane and nitrogen

D. Methane and carbon mono oxide
990. Who gave the formula for speed of germination_______________?
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A. Moore (1973)

B. Germ (1949)

C. Baskin (1972)

D. Maguire (1962)
991. Conservation of germplasm under natural condion is called_________________?
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A. Obsolute cultivars

B. In-situ conservation

C. Ex-situ conservation

D. Gene bank

993. APTMA stands for_____________________?
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A. All Pakistan textile mills association

B. All Pakistan trade monitoring agency

C. All Pakistan trade monitoring association

D. All Pakistan textile mill management authority

994. The substance that an enzyme acts upon is known as___________________?
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A. Mycotoxin

B. Substrate

C. Product

D. None of the above

998. Allogamy leads to___________________?
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A. Heterozy gosity

B. Segregation

C. none of the above

D. Homozy gosity

1000. Primary air polluted is________________?
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A. SO<sub>3</sub>

B. None

C. SO2

D. SO<sub>4</sub>