Q.
Choose the feature not shown by cyanobacteria.
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a
Presence of gelatinous sheath around the cells or colonies.
b
Living as parasites on other organisms
c
Having Chlorophyll a similar to higher plants.
d
Able to fix atmospheric nitrogen into ammonia.
answer is B.
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Detailed Solution
No cyanobaterium lives as parasite. They are mainly photoautotrophs and diazotrophs. Some are symbionts associated with Fungi to form lichens and some live in the bodies of embryophytes like Anthoceros, Cycas etc. They have chlorophyll a similar to higher plants.
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