Agriculture - Mock Test 34

Question 331

Upward translocation of fluid in xylem takes place due to?

A) Pull of transpiration stream B) Pumping action of guard cells C) Suction by sunrays D) All above

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Question 332

Upper plastic limit is also known as?

A) Liquid limit B) Lower limit C) Index of plasticity D) None of these

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Question 333

Unit of measuring electrical conductivity is?

A) Micro-gram/sq.com B) Angstran/cm C) Millimhos/cm D) None of these

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Question 334

Under tropical condition, the volatilization losses of nitrogen is?

A) 20 - 50% B) 10 - 20% C) 40 - 80% D) None of these

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Question 335

Type of water vapour movement, which occurs in soils, is?

A) Internal B) External C) Both of these D) None of these

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Question 336

Tricalcium phosphate is soluble in?

A) Water B) Weak acid C) Strong mineral acid D) None of the above

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Question 337

Transport of P2O5 from the cytosol (pH about 7) into vacuoles (pH nearly 5.5) involves?

A) H2PO4 alone B) H2PO4 alone C) PO4 alone D) H2PO4 and HPO4

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Question 338

Which of the following organism is responsible for decomposition of organic matter?

A) Quartz B) Feldspar C) Mica D) All of these

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Question 339

Tolerance to soil salinity of the given set of crops is such that?

A) Barley > wheat > upland paddy > beans B) Barley > wheat > beans > upland paddy C) Wheat > Barley > beans > upland paddy D) Wheat > Barley > upland paddy > beans

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Question 340

To prevent denitrification losses of nitrogen in paddy field, nitrogen should be applied in the?

A) Reduced zone B) Oxidized zone C) Hydronized zone D) Calcified zone

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