A) DNA without histone
B) nuclear membrane absent
C) 70S ribosomes
D) alt of the above
Correct Answer: D
Solution :
Blue-green algae (Cyanophyceae) shows prokaryotic cell organization which characterized by the presence of DNA without histonc (a basic protein) 70S ribosome and absence of nuclear membrane. Many species like Nostoc, Anabaena, Alusira etc. are used as biofertilizer.
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