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The common nitrogen-fixer in paddy fields is

Frankia
Rhizobium
Azospirillum
Oscillatoria
Additional Questions

The symbiotic association of fungi with the roots of higher plants is called:

Answer

What is the common name of Drosophila melanogaster?

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Which of the following is a gram-negative bacterium?

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Study the following lists:

List - IList - II
(A)Usage of bisexual flowers as female parents(I)Clonal selection
(B)Incorporation of several desirable characters into a single variety(II)Pure line selection
(C)Exploiting hybrid vigour for many generations(III)Emasculation
(D)Improving local varieties of self pollinated crop(IV)Hybridization
(V)Polyploidy breeding

The correct match is:

Answer

The term antibiotic was coined by:

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Which of the following is added to milk to curdle it or produce fermented milk products?

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Physical removal of large and small from the sewage through filtration and sedimentation is called:

Answer

Which of the following will begin fixing nitrogen only after they stop reproducing?

Answer

Which of the followings is also called sac fungi that live parasitically and in various habitats?

Answer

Pollution from animal excreta and organic waste from kitchen can be most profitably minimized by

Answer
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