Question

Which among the following is not a prokaryote?

• A. Saccharomyces
• B. Oscillatoria
• C. Nostoc
• D. Mycobacterium

Answer 1

Answer: (A)

• An organism that does not possess a true nucleus (nucleus with nuclear membrane) and membrane-bounded organelles are called as prokaryotes.
• Monerans are prokaryotes. Eg. bacteria (Mycobacterium), cyanobacteria (Nostoc and Oscillatoria).
• Saccharomyces belong to Kingdom Fungi which possess a true nucleus and membrane-bounded organelles i.e., eukaryotic.

Thus, the correct answer is option B.