1
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
The common nitrogen-fixer in paddy fields is –
A
Azospirillum
B
Frankia
C
Rhizobium
D
Oscillatoria
2
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Which one of the following not used in organic farming ?
A
Earthworm
B
Oscillatoria
C
Snail
D
Glomus
3
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
A common biocontrol agent for the control of plant diseases is –
A
Bacillus thuringiensis
B
Trichoderma
C
Glomus
D
Baculovirus
4
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Select the correct statement from the following:
A
Methanobacterium is an aerobic bacterium found in rumen of cattle
B
Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria
C
Biogas, commonly called gobar gas, is pure methane
D
Biogas is produced by the activity of aerobic bacteria on animal waste
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