agriculture MCQs – Page 165

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 Review each marked answer and report any item that may be outdated or unclear.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

3281. Problem of erosion in Thal and Cholistan is due to____________________?
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A. Water

B. Wind

C. Fire

D. Atmosphere

3282. The plant in which CO2 fixation is solely via the Calvin cycle is_____________________?
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A. CAB

B. CAM

C. C

D. C

3283. Extraction of humic substance can be done by______________________?
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A. NH4OH

B. None of the above

C. NH4Cl

D. NaOH

3284. Clear water with organic matter or sediment and minimum biological activity is known as__________________?
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A. Eutrophic

B. Mestrophic

C. Oligotrophic

D. Hydrotrophic

3285. Main product of photosynthesis is_____________________?
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A. C6H12O6

B. C3H6O6

C. C12H24O12

D. C5H12O6

3286. Soil water can be determined by_____________________?
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A. Mass water content

B. Macro pores

C. Both a & b

D. None of the above

3287. The conductivity of a saturation extract is greater 4 dsm-1 an exchangeable sodium percentage (ESP) of less than 15 and the pH is usually less than 8.5 is called as__________________?
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A. Saline-sodic soils

B. Neutral soils

C. Saline soils

D. Sodic soils

3288. Equation of Ozone is________________________?
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A. O2 O

B. None of the above

C. O3 + O

D. O2 + O =O3

3289. A soil with an ESP greater than 15 is usually classified as___________________?
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A. Sodic soil

B. Saline soil

C. None of the above

D. Acidic soil

3290. Which bacteria causes fermentation__________________?
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A. Bacillus

B. Corey

C. Azotobacter

D. Pseudomonas

3291. Which soil bolds more water ?
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A. Sitry

B. Sandy

C. Clayey

D. Stony

3292. Which one of the following is physical property of soil______________________?
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A. Oxidation

B. Reduction

C. None of the above

D. Hydration

3293. Age of Earth is_____________________?
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A. 4 billion years

B. 4.5 billion years

C. 6 billion years

D. 1 billion years

3294. Acid soils of the worlds arable comprise up to_____________________?
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A. 58%

B. 40%

C. 20%

D. 30%

3295. The unit of electrical conductivity is____________________?
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A. mmhos/m

B. dsm-1

C. ms/cm

D. Al the above

3296. Felsic rocks consists of___________________?
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A. fe

B. Buiotitic

C. Quartz

D. Quartz & Feldspars

3297. Product of microorganism that appears to chelate calcium is called_____________________?
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A. Phospheric acid

B. Carbon dioxide

C. 2-ketoghconic acid

D. Pyruive acid

3298. Auxins promote___________________?
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A. Cell elongation

B. Cell division

C. Both a & b

D. None of the above

3299. pH in coniferous forest is__________________?
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A. Less than 7

B. Neutral

C. Greater than 7

D. Basis

3300. Pneumatic potential is due to____________________?
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A. Petrol

B. Gas

C. Soil

D. Water

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