Government CDS Question:
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Which one of the following is a free-living bacterium that helps in nitrogen fixation in soil?
(A) Azotobacter
(B) Anabaena
(C) Azolla
(D) Nostoc

Government CDS Interview Question
Government CDS Interview Question

Answer:

(A) Azotobacter

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Which one of the following is an example of vestigial organ in man?
(A) Jaw apparatus
(B) Ear muscles
(C) Canine teeth
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(B) Nitrogen oxide
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