agriculture MCQs – Page 132

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

agriculture Mcqs

1. soil science 2. agronomy 3. entomology 4. water management 5. horticulture 6. agricultural economics 7. plant pathology 8. food technology 9. animal husbandry 10. plant breeding and genetics

2621. According to a latest research, Pakistan is predominantly a dryland country; 80% of its land area is arid and semi arid, 12% sub-humid and 8% under humid climate. Thus , soils of arid & semi-arid regions are vulnerable to a wide range of degradation process. As the case in arid and semi-arid climates elsewhere in south-central/southern Asia and Sub-Saharan Africa; _________________ are among the major causes of soil degradation and desertification?
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A. Accelerated erosion & salinization

B. Depletion of soil fertility and SOM

C. Drought stress

D. All of the above

2622. Who will decompose organic matter first:
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A. Fungi imperfecti

B. Basidiomycetes

C. Actinomycetes

D. Bacteria

2623. What is a soil horizon?
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A. Soil texture

B. Soil structure

C. All of these

D. Layers of soil

2624. In no tillage systems, the soil layers have?
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A. Higher total pore space

B. Lowe bulk density

C. Higher bulk density

D. None of the above

2625. Soils that have more than 20% organic matter are termed as organic soils. These are also called:________?
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A. Peat soil

B. solonchalk soil

C. Muck soil

D. Both a and c

2626. Soil Organic Matter (SOM) which consists of about _______ % organic carbon plays a vital role by providing macro & micro nutrients:
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A. 62%

B. Al of the above

C. 72%

D. 58%

2627. Weathering is the natural process of__________?
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A. Disintegration

B. Sedimentation

C. Decomposition

D. both A & C

2628. What is the concentration of pure water?
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A. 55.5 mol/L

B. 45.5 mol/L

C. Both a and b

D. none of these

2629. Peat soils are not present in Pakistan because these are formed in___________?
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A. Cool climate

B. Acidic conditions

C. both A & B

D. None of the above

2630. ______________ consist of particles that are produced by disintegration of pre-existing rocks through the process of weathering:
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A. Clastics

B. Non-clastics

C. both A & B

D. None of the above

2631. One ha cm of water is equal to__________?
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A. 100 tonnes of water

B. 100000 litres of water

C. Both A & B

D. 10 tonnes of water

2632. 1 meq of HCl is equal to_________?
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A. 14 mg of N

B. 0.14 mg of N

C. 1.4 mg of N

D. 140 mg of N

2633. In Pakistan, the major phosphatic fertilizers are:
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A. DAP

B. All of Above

C. SSP

D. Nitrophos

2634. Which nutrients are immobile in plants?
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A. Ca

B. P

C. B

D. Both A & C

2635. Main kind of insect pests are___________________?
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A. Major pest & Minor pest

B. Migrant pest & potential pest

C. both A & B

D. None of the above

2636. Accumulation of soluble salts in soil________?
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A. Desalinization

B. Alkalization

C. All off these

D. Salinization

2637. Nitrogen fixation is accomplished by:_________?
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A. Plants

B. Bacteria from atmosphere

C. Fungi

D. None of these

2638. Which of the following are secondary minerals:
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A. Clay minerals

B. Iron and aluminiumoxides

C. Amorphous silicates

D. All of the above

2639. Which of the following is wrong?
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A. The arrangement of soil aggregates is called soil structure.

B. Soil texture influences behavior of soil.

C. The relative percentage of sand, silt, clay is soil texture.

D. Sandy soils have higher sand percentage with more water holding capacity

2640. The deficient macronutrient in the sodic soils is:_______?
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A. Mg

B. Cu

C. Mo

D. Ca

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