1101. The crops which are grown to reduce the soil erosion and natural losses by leaching is known as______________?
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A. Mixed crops

B. Companion crops

C. Cover crops

D. Ratooning crops

1102. Plants that can tolerate drought are_________________?
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A. None of the above

B. Xerophytes

C. Trunk plants

D. Hydrophytes

1103. Allelocliemicals may enter in the soil through the process of_________________?
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A. Diffusion

B. Mass flow

C. Root exudation
1104. Dwarf varieties of wheat are more resistance to_______________?
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A. Viruses

B. Lodging

C. Insect pest

D. Disease

1105. The condition of drying of plant parts due to lack of water is called__________________?
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A. Drought

B. Wilting

C. None of the above

D. Water stress

1106. Germplasm collected within the country is known as____________________?
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A. Indigenous collection

B. Exotic collection

C. Working collection

D. Active collection

1107. The K is predominantly in______________?
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A. Leaves

B. Grain

C. All the above

D. Straw
1108. CCRI stands for_______________?
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A. Cotton crop research institute

B. Central cotton research institute

C. non of these

D. Center for crop research institute

1109. Total cropped area of Sindh is___________________?
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A. 2.8 million hac

B. 3.75 million hac

C. 4.00 million hac

D. 4.5 million hac

1110. Mesophytes are grown in__________________?
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A. Moist places

B. None of the above

C. Dry condition

D. Desert area

1111. the layer of atmosphere which blocks ultraviolet radiation from sun is___________________?
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A. Ozosphere

B. All the above

C. Stratosphere

D. Ozone
1112. The maximum working depth of disc plow is_________________?
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A. 400 mm

B. 450 mm

C. 300 mm

D. 200 mm

1113. The sever salinity problem has taken lands out of production as___________________?
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A. 10%

B. 50%

C. 30%

D. 45%

1114. The allelochemicals are broadly classified as_______________?
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A. Trytophan

B. Phenolics and. terpenoids

C. non of there

D. Cytokinin and ethylene

1115. In Bindi, production of foundation seed needs an isolation distance of__________________?
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A. 3 meters

B. 50 meters

C. 100 meters

D. 200 meters
1116. Due to phosphorus deficiency in plants____________________?
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A. Plants mature late

B. Roots do not develop properly

C. Poor flowering and fruil selling occurs

D. All the above
1117. Tensiometer is used for measuring____________________?
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A. Wind pressure

B. Soil moisture

C. None of the above

D. Water pressure

1118. Excess of nitrogen to plants causes_________________?
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A. All the above

B. Delay in ripening

C. Delay in growth

D. Delay in germination

1119. Abnormal seeding growth in rice is more closely related, with______________?
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A. IID grains

B. LD grains

C. Both a & b

D. None of the above

1120. Fertilizer requirements of wheat under medium loamy soil is________________?
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A. 136-85 NP kg/ha

B. 110-60 NP kg/ha

C. 100-70 NP kg/ha

D. 75-90 NP kg/ha

1121. Global gene pool rice is maintained at_________________?
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A. IRRI Philippines

B. Mexico

C. None of the above

D. China

1122. The CO, content of air is___________________?
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A. 10.30%

B. 0.00%

C. 0.03%

D. 1%

1123. Organisms which feeds on dead and decaying organisms are called as_________________?
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A. Halophytes

B. All the above

C. Saprophytes

D. Xerophytes

1124. Sunflower is allelopathic crop to many____________________?
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A. None of the above

B. Weeds

C. Microorganisms

1125. The pH of urea fertilizer is _________________?
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A. 3.5

B. non of these

C. 4

D. 8.0
1126. Accumulation of transported material A to B horizon is known as____________________?
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A. Eluviation

B. Deposition

C. Alluviation

D. llluviation
1127. In wheat, production of certified seed needs an isolation distance of____________________?
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A. 4 Meters

B. 5 Meters

C. 2 Meters

D. 3 Meters
1128. Among the cotton exporting countries the number of China is________________?
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A. 1<sup>st</sup>

B. 4<sup>th</sup>

C. 3<sup>rd</sup>

D. 2nd
1129. Gene pool consist of____________________?
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A. Modern cultivars

B. Advanced breeding materials

C. All the above

D. Land race

1130. One rooting hormone occurring naturally in plant is ___________________?
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A. Naphthalene acetic acid

B. Indolacetic acid

C. Indolebutyric

D. None of the above

1131. Allelochemicals are used as growth regulators and natural pesticides to promote__________________?
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A. Sustainable agriculture

B. Improve agriculture

C. Both a and b
1132. Precise assessment of pest pressure to evaluate Economic risk from pest infestations is called_________________?
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A. None of the above

B. Economic mjury level

C. Economic threshold

D. Crop scouting
1133. Seed rate of cotton per acre is________________?
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A. 10-22 kg

B. 5-6 kg

C. 14-21 kg

1134. In wheat total crop P uptake per ton of gram is about;__________________?
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A. 2-3Kg

B. 5-7 Kg

C. 20-25 Kg

D. 5-20 Kg

1135. EC of saline soil is equal to or greater than________________?
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A. 3

B. on of these

C. 2

D. 4
1136. The control and preservation of natural resources for present and future use is called_________________?
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A. Sustainability

B. Conservation

C. Crop residue management

D. None of above

1137. Hyderabad district area is in_________________?
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A. Raygistan range area

B. None of the above

C. Cholistan range area

D. Thai range area
1138. The series of transformation which a nutrient undergoes in the biosphere before returning to its original formed is called_______________?
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A. Carbon cycle

B. Nitrogen cycle

C. None of the above

D. Nutrient cycle
1139. A crop grown on residual moisture after harvesting rice is called__________________?
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A. Barani crop

B. Sure crop

C. Ratoon crop

D. Dubari crop
1140. A process in which most of the organisms are killed is known as_________________?
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A. Sterilization

B. Heating

C. Neutralization

D. Pasteurization

1141. A good source of vegetable protein is________________?
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A. Egg

B. non of there

C. Com

D. Pulses
1142. N mineralization is effected by soil pH_______________?
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A. Above 10

B. None of the above

C. Above 6

D. Below 6

1143. Removal of branches for forage is________________?
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A. Lopping

B. Litter

C. Foraging

D. None of the above

1144. The lowest pest population that will cause economic damage is called__________________?
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A. Economic threshold

B. Economic damage

C. Economic pest

D. None of the above

1145. Losses of soil moisture vapour form is called as_________________?
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A. Evaporation

B. Transpiration

C. Translocation

D. Both A and B
1146. Gamatophytic system of self incompatibility was first discovered by____________________?
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A. East and Mangelsdref (1925)

B. Bresbaker (1958)

C. Frankel (1977)

D. Hughes and Babceek

1147. Self incompatibility which is controlled by two genes is found in___________________?
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A. None of the above

B. Solanaceae

C. Cruciferae

D. Gramineae
1148. The experimental design which control fertility variation in one direction is known as____________________?
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A. AD

B. SPD

C. LSD

D. RBD
1149. The organic evolution look place about__________________?
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A. Still occurring

B. 200,000,000 ears

C. 100,000,000 years

D. 300,000,000 years

1150. Which of the following had great influence on Drawing during during formulation of his theory of natural selection_________________?
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A. Mathiss essay on population

B. De Vries theory of mutation

C. Lamarks idea on inheritance of acquired characters

D. Mendess experiment on pea