Biology Biological Classification All Topic Question For Revision Test Single Correct MCQ
Published on: August 11, 2026

Nuclear membrane is absent in -

A
Penicillium
B
Nostoc
C
Volvox
D
Agaricus

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Text Solution

Verified by Experts
The correct answer is:
B

• Prokaryotic cells (such as bacteria and cyanobacteria) lack a well-defined nucleus and membrane-bound organelles.

• Their genetic material is not enclosed by a nuclear envelope and instead lies directly in the cytoplasm in a region called the nucleoid.

• Nostoc is specifically a genus of cyanobacteria (blue-green algae), which belongs to the kingdom Monera.

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