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                                    32.Nuclear membrane is absent in(1) Volvox(3) Penicillium[AIPMT (Prelims)-2012](2) Nostoc(4) Agaricus | 
                            
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Answer»  option (2) is correct. Nostocis a prokaryote. Prokaryotic cells lackmembranebound organelles and well organized nucleus, that isnuclear envelope is absentin these cells. The nuclear envelope, also known as the nuclear membrane, a bilayermembranes which surrounds the nucleus, and in eukaryotic cells it encases the genetic material.  | 
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