How does the nitrogen fixation occur in legumes?

By specialized bacteria in their roots

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By specialized bacteria in their leaves

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Independent of bacteria that live in them

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Not by any of the above methods

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Solution

The correct option is A By specialized bacteria in their roots
Nitrogen fixation is the conversion of atmospheric nitrogen into nitrates and ammonia by nitrogen-fixing bacteria which are associated with the roots of the legume plants.
Examples of nitrogen fixing bacteria includes Rhizobium
So, the correct answer is 'By specialized bacteria in their roots'

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Nitrogen-fixation by bacteria does not occur in the presence of:

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