Agriculture - Mock Test 56

Question 551

Rhizobium leguminoserum can fix the nitrogen in the roots of?

A) Alfalfa, Sweet clover B) Clovers C) Pea, Sweetpea, lentil D) Beans

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Question 552

Rhizobium japonicum can fix the nitrogen in the roots of?

A) Soyabean B) Cowpea C) Beans D) Lentil

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Question 553

Rhizohium culture is used to increase biological nitrogen fixation in?

A) Pulse crops B) Cereals crops C) Oilseeds D) Cotton

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Question 554

Rhizobium after infection converts to a form, which is irregular in shape and is called?

A) Spore B) Cyst C) Bacteriod D) None of the above

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Question 555

Rhizobia infect the host legumes through?

A) Eqidermal cells B) Cortex cells C) Root bairs D) All of the above

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Question 556

Release of nutrients like nitrogen, phosphorus and sulphur from the added organic matter by M.O. at the initial stage of degradation will depend upon?

A) Soil pH B) Soil temperature C) Chemical composition of added organic matter D) Method of incorporation

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Question 557

Refers to the upper most biochemical weathered portion of the regolith?

A) Soil B) Earth C) Rock D) None of the above

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Question 558

Refers to the study of the soil properties in relation to crop production ?

A) Soil taxonomy B) Geology C) Pedology D) Edaphology

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Question 559

Refers to the study of the origin of soils in there natural environment, its classification and description?

A) Edaphology B) Pedology C) Geology D) None of the above

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Question 560

Which one of the following organic matter has the narrowest C/N ratio?

A) Mustard B) FYM C) Compost D) Groundnut cake

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