Question

Nuclear membrane is absent in
[AIPMT(Prelims)-2012]
(1)Volvox
(2)Nostoc
(3)Penicillium
(4)·Agaricus

Answer 1

Answer: Option 2) Nostoc

Explanation: Nostoc belongs to Cyanobacteria AKA blue-green algae. And Cyanobacteria belongs to Moneran family. Hence, monerans are prokaryotic who lack proper membrane bound organelles. So, Nostoc lacks nuclear membrane.

Answer 2

Answer:

See penicillium and agaricus are fungus, so they have a nuclear membrane. Then Volvox is an algae, so it has a nuclear membrane. Nostoc is a cyanobacteria, hence it is the only one in the given options that is without the nuclear membrane.