NEET Biology question

Which of the following correctly distinguishes Azotobacter/Azospirillum from Rhizobium in terms of their nitrogen-fixing lifestyle?

(A)Azotobacter/Azospirillum are free-living nitrogen fixers, while Rhizobium is symbioticCorrect
(B)Azotobacter/Azospirillum are symbiotic, while Rhizobium is free-living
(C)Both are exclusively symbiotic with legumes
(D)Neither group can fix nitrogen at all

Answer: (A)

Solution

Azotobacter and Azospirillum are free-living soil bacteria capable of independent nitrogen fixation, whereas

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Question ID VK-124412