agriculture MCQs – Page 145

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 Review each marked answer and report any item that may be outdated or unclear.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

2881. The clay fraction of the soil contains particles less than 0.002 mm. Particles <0.001 mm size:
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A. Soil Silt

B. Soil colloids

C. Soil loam

D. Soil sand

2882. Potassium plays a significant role in the transport of water & nutrients through the plant in the xylem. When the supply of K is reduced, the transportation of ___________________ is depressed:
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A. Calcium, magnesium

B. Nitrates, Phosphates

C. All of the above

D. Amino acids

2883. Wash-in takes place in which horizon?
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A. B

B. E

C. O

D. A

2884. Rocks and weathered materials transported by ___________ ,act as initial materials for soil formation?
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A. Glaciers

B. Wind

C. Water

D. All of the above

2885. Ca, Mg, S are called__________?
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A. Primary nutrients

B. Minor nutrients

C. Excellent nutrients

D. None of these

2886. During decomposition of organic matter, inititial decomposition is dominated by:__________?
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A. Actinomycetes

B. Bacteria

C. Fungi

D. Both B & C

2887. Each layer of phyllosilicates is composed of two types of sheets:
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A. Tetrahedral sheet

B. Triple octahedral sheet

C. Octahedral sheet

D. Both A & C

2888. Browning disease of rice is a_________?
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A. Viral disease

B. Bacterial & fungal disease

C. Physiological disease

D. The above statement is wrong

2889. The dominance of acidity creates toxicity?
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A. Mg

B. Mo

C. Al

D. Zn

2890. What is Vesicular Arbuscular Mycorrhiza (VAM)?
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A. Bacteria

B. Fungi

C. both A & B

D. None of the above

2891. Composition of igneous rock is determined by___________?
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A. Depth of molten magma

B. Composition of molten magma

C. Both A and B

D. Composition can not be determined.

2892. ___________ , considered a perfect soil, is a mixture of silt, clay and sand:
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A. Loam

B. Loamy sand

C. Sandy loam

D. Clay

2893. Phosphorus (P) is the second major nutrient essential for plant growth. With the exception of Nitrogen (N) and Potassium (K), Phosphorus is required by plants in_________?
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A. Greater quantities

B. Not required

C. Lesser quantities

D. The above statement is wrong

2894. In Pakistan, Indus plains are formed from ___________ parent material which was transported by Indus river and its tributaries from Himalayas?
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A. Colluvial

B. None of the above

C. Moraine

D. Till

2895. The most suitable species for reclamation of sandy soils is:_________?
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A. Casuarina equiselifolia

B. Acacia spp

C. All of the above

D. Azadirachta indica

2896. ______________ 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

2897. International Union of Soil Sciences(IUSS),foundedin___________?
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A. 1824

B. 1724

C. . 1924

D. 1624

2898. 1 bar is equal to_________?
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A. 0.9869 atm

B. All of these

C. Wt. Of a 1020 cm water column

D. 75.01 cm high mercury column

2899. Accumulation of soluble salts in soil________?
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A. All off these

B. Desalinization

C. Alkalization

D. Salinization

2900. The percentage of calcium content in single superphosphate?
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A. 19.5%

B. 24%

C. 30%

D. 25%

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