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What is the role of heterocysts in a cya...

What is the role of heterocysts in a cyanobacterial filament?

A

They carryout photosynthesis and nitrogen-fixation

B

They carryout nitrogen fixation

C

They carryout photosynthesis

D

They oxidise inorganic substsances to obtain energy

Text Solution

Verified by Experts

The correct Answer is:
B
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