Agriculture - Mock Test 59

Question 581

Oxygen requirement of the plant is met by absorbing?

A) Respiration B) Transpiration C) Photosynthesis D) Chlorophyll formation

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Question 582

Oxidation of sulfure to sulphate is carried out by?

A) Bacillus spp B) Aspergillus spp C) Azotobacter spp D) Thiobacillus spp

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Question 583

Organism used as biofertilizer in wheat cultivation?

A) Azotobacter B) Rhizobium C) Nostoc D) All of these

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Question 584

Organic matter content of 'histosols' and "hydromorphic" soils is?

A) 30-40% B) 50-57% C) 60-70% D) 12 - 18%

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Question 585

On the basis of total mass, the relative abundance of the given elements in the earth's crust is such that?

A) Si > O2 > Fe = Al B) O2 > AI > Sl > Fe C) O2 > Si > Fe > Al D) O2 > Si > Al > Fe

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Question 586

On the basis of total mass, the relative abundance of the given elements in the earth's crust is such that?

A) Si > O2 > Fe = Al B) O2 > AI > Sl > Fe C) O2 > Si > Fe > Al D) O2 > Si > Al > Fe

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Question 587

On the basis of total mass, the relative abundance of the given elements in the earth's crust is such that?

A) Si > O2 > Fe = Al B) O2 > AI > Sl > Fe C) O2 > Si > Fe > Al D) O2 > Si > Al > Fe

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Question 588

On the basis of pH measurements, the nearly neutral soils have pH value between?

A) 6.0 to 6.5 B) 6.6 to 7.5 C) 7.5 to 8.5 D) 5.0 to 6.0

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Question 589

Olsen method of P determination is more effective in?

A) Acidic soil B) Alkaline ail C) Normal soils D) None of these

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Question 590

Occurrence of quartz, in high amounts makes a rock?

A) Hard B) Soft C) Alkaline D) Acidic

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