4. Nuclear membrane is absent in A.Volvox B.Penicillium C.Agaricus D.Nostoc
Answer: Option D Solution: Penicillium and Agaricus are fungi while Volvox is an alga. All three are eukaryotes thus have a membrane bound nucleus. Nostoc is a cyanobacterium, i.e., prokaryote, so it lacks true nucleus, thus nuclear membrane is absent.
