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प्रश्न
Nostoc keeps a symbiotic relation ______.
पर्याय
with the root of Pinus
with coralloid root of Cycas
with the root of rose
all of the above
MCQ
रिकाम्या जागा भरा
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उत्तर
Nostoc keeps a symbiotic relation with coralloid root of Cycas.
Explanation:
Nostoc, a cyanobacterium, fixes atmospheric nitrogen into usable nitrates and provides it to the Cycas plant. In return, the specialized coralloid roots of Cycas provide a protected, stable environment for Nostoc.
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