A prokaryotic autotrophic nitrogen fixing symbiont is found in:
A
Pisum
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B
Alnus
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C
Cycas
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D
Cicer
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Solution
The correct option is C Cycas The coralloid roots contain symbiotic cyanobacteria (blue-green algae), which fix nitrogen and, in association with root tissues, produce such beneficial amino acids as asparagine and citrulline.