Agriculture - Mock Test 44

Question 431

Which of the following soils has higher buffering capacity?

A) Sandy soils B) Loamy soil C) Loamy sand D) Clay soils

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Question 432

Which of the following statement is correct?

A) Blue-green algae causes plant diseases B) Blue-green algae fix atmospheric nitrogen in soil C) Blue-green algae grows best in maize crop D) Dry conditions are good for growth of blue-green algae

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Question 433

The harmful effect of saline soil is due to?

A) High osmotic pressure of soil solution B) Low osmotic pressure of soil solution C) High pH D) Low pH

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Question 434

The global average of solar radiation reaching the earth is?

A) 20% B) 30% C) 40% D) 50%

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Question 435

The gaseous exchange between soil and atmosphere is the?

A) Artificial process B) Natural process C) Change in soil structure D) None of the above

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Question 436

The following factors other than gypsum solution may effect the extraction of calcium and suplhate from a gypsiferous soil?

A) Calcium solution of gypsum B) Ecxchange reactions wherein calcium replaces no cations C) Sulphte solution from a source other than gypsum D) None of these

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Question 437

The foliated metamorphic rocks are formed due to?

A) Pressure-metamorphism B) Heat - metamorphism C) Hydro metamorphism D) None of above

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Question 438

The first passage through which nutrients enters into the leaves?

A) Intercuticular passage B) Mesophyll cells C) Cell wall plastic membrane D) None of the above

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Question 439

The fertilizers which have two or more than two major plant nutrient in their chemical composition are called?

A) Double fertilizer B) Complex fertilizer C) Mixed Fertilizer D) Organic fertilizer

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Question 440

The factor responsible for the formation of acid soil?

A) Low rainfall B) High rainfall C) High evaporation D) Irrigation with saline water

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