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The nuclear material without nuclear membrane is observed in

1. Bacteria and green algae
2. Cyanobacteria and red algae
3. Bacteria and cyanobacteria
4. Mycoplasma and green algae

Correct answer: Bacteria and cyanobacteria

Solution

Bacteria and cyanobacteria are prokaryotes, so their DNA lies in a nucleoid region without a nuclear membrane. Green algae and red algae are eukaryotic and do have a true nucleus.

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