agriculture MCQs – Page 126

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 Review each marked answer and report any item that may be outdated or unclear.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

2501. In cation exchange, 18 mg of Ammonium ion can be exchanged for__________?
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A. 46 mg of Na

B. 40 mg of Ca

C. 12 mg of mg

D. 6 mg of Al

2502. Element responsible pollen grain of plant__________?
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A. B

B. N

C. K

D. P

2503. The process by which nutrients chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil:
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A. Infiltration

B. Seeping

C. Leaching

D. Percolation

2504. From the point of view of crop production, Soil testing refers to______________?
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A. Laboratory analysis assessing plant available nutrient status

B. Collection of plant leaves samples only

C. Salinity & elemental toxicity of a soil

D. Both A & C

2505. The maximum amount of water which a soil can hold after free drainage has ceased is called as_______?
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A. Water use efficiency

B. Water holding capacity

C. Water harvesting

D. Water potencial

2506. Journal Plant and Soil is published from__________?
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A. Pakistan

B. Japan

C. USA

D. The Neterlands

2507. The percentage of calcium content in single superphosphate?
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A. 19.5%

B. 24%

C. 30%

D. 25%

2508. Losses of soil water not includes_________?
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A. Hydroponics loss

B. Direct evaporation from the soil & transpiration from vegetation

C. down-ward drainage

D. Surface run-off from the field

2509. Desert locust is__________________?
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A. None of the above

B. Occasional pest

C. Potential pest

D. Key pest

2510. All harvested crops remove plant nutrients from the soil. Whether used for _______________; the various crop products are often consumed far away from the production sites, some times thousands of kilometers away in another country.
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A. Feed

B. industrial raw materials

C. Food

D. All of these

2511. According to FCO, the maximum permissible total N content in the form of urea in DAP should be:_________?
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A. 5.50%

B. 4,50 %

C. 3.50%

D. 2.50 %

2512. There are twelve soil orders found in the world of which six soil orders have been recognized at various locations are________?
0

A. The above statement is wrong

B. Entisols, Inceptisols, Aridisols, Alfisols, Mollisols, Vertisols

C. Andisols, Gelisols, Histosols, Spodosols, Oxisols, Ultisols

D. Andisols, Aridisols, Histosols, Vertisols, Regosols, Libosols

2513. During decomposition of organic matter, inititial decomposition is dominated by:__________?
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A. Actinomycetes

B. Bacteria

C. Fungi

D. Both B & C

2514. The availability of essential nutrients from soil to the plants is controlled by the ________ properties of soil:
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A. Physical

B. chemical

C. Biological

D. both A & B

2515. Availability of Zn is higher to crops in:_________?
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A. Acid soils

B. Sodic soils

C. Saline soils

D. Saline-sodic soils

2516. Source of negative charges on silicate clays is/ are________?
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A. All of these

B. Anion exchange

C. Isomorphous substitution

D. Exposed crystal edges

2517. The nutrient element silicon (Si) is:_________?
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A. Beneficial

B. Harmful

C. Both a and b

D. None of the above

2518. Ruminant can digest fiber because it contain____________________?
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A. Enzyme protease

B. None of above

C. Enzyme amylase

D. Enzyme cellulose

2519. Potassium (K) occurs as a constituent of the earths crust in the proportion of_________?
0

A. 17%

B. 23%

C. 2.3 %

D. 1.70%

2520. All the practices used to control the pest population with in certain limit are called_________________?
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A. Impossible to control

B. Chemical control

C. Natural control

D. Artificial control

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