agriculture MCQs – Page 150

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 Review each marked answer and report any item that may be outdated or unclear.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

2981. Which of the following is not the soil order prevail in Pakistan?
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A. None of the above

B. Mollisols

C. Aridisols

D. Alfisols

2982. Fe is trivalent in which of the chemical compound:
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A. Fe2 (NO3)3

B. Fe (NO3)3

C. Fe3 (NO2)

D. None of these

2983. BGA was discovered as a nitrogen fixer in paddy field by ?
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A. Beijerinck

B. None of the above

C. Fred

D. P.K dey

2984. _______________ of alluvium (stratified sediment) by earth-worms is the most important soil-forming process in the alluvial plain of Pakistan:
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A. Homogenization

B. Melanization

C. Pedoturbation

D. Lessivage

2985. The soils in which the weathered material is taken away to other place by several agents are called__________?
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A. Transported soil

B. Aeolian soil

C. Alluvial soil

D. None of these

2986. Which of the following soil has the highest water holding capacity_________?
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A. Sand soil

B. Silt soil

C. None of these

D. Forest soil

2987. In Pakistan there is general deficiency of rainfall. It varies from 125 mm annually in upper Sindh to about 900 mm in the sub-mountainous of northern Pakistan. In Balochistan the mean annual rainfall is about 200 mm, diminishing to ________ mm in the desert of Kharan:
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A. >70 mm

B. None of these

D. 100 mm

2988. New soils, no or little profile development:
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A. Aridisols

B. Inceptisols

C. Entisols

D. Andisols

2989. Inceptisols:___________?
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A. Young soils with few horizons

B. Organic soils

C. Dry soils

D. Volcanic soils

2990. Soil pores created by the animal such as earthworm and plant root are called_________?
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A. Diameter

B. Biopores

C. Mesopores

D. Microspores

2991. Soil erosion is __________ of soil from one place ti another place by natural agencies (wind & water):
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A. Detachement of soil

B. Transportation

C. both A & B

D. None of these

2992. Who will decompose organic matter first:
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A. Basidiomycetes

B. Bacteria

C. Fungi imperfecti

D. Actinomycetes

2993. Rhizoplane is________?
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A. Root surface

B. Area within the roots

C. An area of soil from root surface to 5 cm

D. All of them

2994. Which one of the following clay mineral has the highest CEC?
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A. Montmorillonite

B. Vermiculite

C. Kaolinite

D. Illite

2995. The horizons O, A, E and B (other than r and C) are collectively called_____________?
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A. inner core

B. Solum

C. Regolith

D. Outer core

2996. Organic matter decomposes rapidly in Pakistani soils because of ____________ conditions, that is why our soils generally have < 1% organic matter:
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A. High temperature

B. Alkaline

C. Both a & b

D. None of a & b

2997. Soil erosion Occurs mainly in:_________?
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A. Inceptisols, Mollisols

B. Alfisols, Entisols

C. Both a & b

D. None of the above

2998. 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

2999. Specific heat is higher in:
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A. Clay

B. Humus

C. both A & B

D. Only Clay

3000. The basic form of present day Universal soil loss equation (USLE), initially involved the use of factors such as ________?
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A. R, K, S and L

B. R, K and S

C. R and K

D. R, K, S, L, C and P

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