Correct Answer: Sperm

Solution : The correct answer is Sperm .

Mycoplasma, Blue-green algae and Pleuropneumonia-like organisms are prokaryotes. These are organisms whose cells lack the nucleus and other organelles. These are single-cell microorganisms. Prokaryotic cells lack the nuclear membrane and mitochondria and divide by the process of binary fission. While sperm cells are eukaryotic cells and not prokaryotic cells.