Agriculture - Mock Test 76

Question 751

Black soils ______ in organic matter and high in bases?

A) Poor B) Medium C) High D) None of these

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Question 752

White irregular spots between veins of upper leaves of maize plant shows deficiency of?

A) Copper B) Molybdenum C) Manganese D) Boron

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Question 753

Black and dark coloured soils absorb _____ heat from sublight than light coloured soils?

A) Less B) More C) Negligible D) Very high

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Question 754

Biological nitrogen fixation is?

A) Aerobic B) Anaerobic C) Both a & b D) None of the above

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Question 755

Biofertilizer is a?

A) Mixture of organic matter and microorganism B) Mixture of inorganic fertilizer and microorganism C) Culture having the desired strain of microorganisms D) Decomposed compost enriched with nimeral solubilising bacteria

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Question 756

Beijerinckia may fixed the N2 upto ______ mg N2/gm sugar?

A) 50-60 B) 10?12 C) 20?25 D) 25?50

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Question 757

Betjertnckia may be present in the soils having pH?

A) 3?9 B) 1?5 C) 7?12 D) None of these

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Question 758

Bacteria present in the root nodules of legumes plants is ?

A) Clostridium B) Azospirillum C) Thizobium D) Azotobacter

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Question 759

Barley, rape and cotton are _____ salt tolerant?

A) High B) Low C) Medium D) None of these

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Question 760

Azotobacter sp. Fix atmospheric nitrogen?

A) As symbiounts on sugarcane B) As symbiounts on rice C) As symbiounts on legumes D) In free soil

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