Agriculture - Mock Test 71

Question 701

Elements, which are absorbed from the soil, are known as?

A) Plant nutrients B) Plant components C) Plant feeders D) Plant supplements

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Question 702

Efficiency of symbiotic biological nitrogen fixation depends on?

A) Host characteristics B) Mocrobial stain characteristics C) Ecological conditons D) All the above

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Question 703

Efficiency of applied fertilizers in whet crop is?

A) 20-50% B) 35-50% C) 60-80% D) 44-64%

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Question 704

Efficiency of applied fertilizers in rice crop is ?

A) 5-50% B) 10-75% C) 50-75% D) 60-90%

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Question 705

Earth's total weight is contributed by different spheres as?

A) 6.91% lithosphere, 93.06% hydrosphere, 0.03%% atmosphere B) 93.06% lithosphere, 6.91% hydrosphere, 0.03% atmosphere C) 92.03% lithosphere. 7.01% hydrosphere, 0.96% atmosphere D) None of above

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Question 706

Earth worms present in the soil?

A) Reduce soil fertility B) Increase soil fertility C) Harm plants D) Causes plant diseases

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Question 707

DQ = DA (dc/dx) dt is the?

A) Fick's law B) Darcy's law C) Stoke's law D) None of these

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Question 708

Downward movement of food synthesized in leaves takes place through?

A) Xylme B) Phloem C) Both these D) None of these

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Question 709

Dominant organisms found in a compost pit are?

A) Thermophilic B) Psychrophilic C) Mesophilic D) Psychrophilic and mesophilic

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Question 710

Diphenyl amine is an indicator, which is used in determination of?

A) Organic carbon B) Phosphorus C) Potassium D) Iron

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