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Question

Symbiotic nitrogen fixing bacteria belong to
  1. Pseudomonas
  2. Acetobacter
  3. Xanthomonas
  4. Rhizobium

A
Xanthomonas
B
Rhizobium
C
Acetobacter
D
Pseudomonas
Solution
Verified by Toppr

The atmospheric nitrogen is not available to plants. There are some nitrogen fixing bacteria which converts atmospheric nitrogen into ammonia which is readily available to plants. Symbiotic nitrogen fixing bacteria lives in symbiotic association with the leguminous plants. They belong to Rhizobium. They are present in the root nodules of plants. They provide nitrogen to the plant and in return get shelter from the plant.
Thus, the correct answer is 'Rhizobium.'

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