Q.

Select the mismatch.

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a

Rhodospirillum -  Mycorrhiza

b

Anabaena - Nitrogen fixer

c

Rhizobium  - Alfalfa

d

Frankia - Alnus

answer is A.

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Detailed Solution

Rhodospirillum – Photosynthetic anoxygenic bacteria             Anabaena – Nitrogen fixing cyanobacteria            Rhizobium – Symbiotically fix N2 in alfalfa & other legume plants            Frankia – It is a member of actinomycetes and symbiotically fix nitrogen in non legumes like Alnus, Casuarina
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