MCQ
Hydrocolloid carrageen is obtained from :
- APhaeophyceae and Rhodophyceae
- ✓Rhodophyceae only
- CPhaeophyceae only
- DChlorophyceae and Phaeophyceae
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$(a)$. Possess tissue level organistion
$(b)$. Has heterocyst
$(c)$. Can fix atmospheric Hydrogen
$(d)$. They are eubacteria