Select the mismatch. Protists - Eukaryotes; Methanogens - Prokaryotes; Gas vacuoles - Green bacteria; Large central vacuoles - Animal cells

Protists are diverse eukaryotic organisms and belong to third domain Eukarya. Methanogens are prokaryotic anaerobes that produce methane gas and belong to domain Archea. Gas vacuoles are aggregates of gas vesicles and are found in green bacteria to impart buoyancy. The presence of large central vacuole is characteristic of plant cells while animal cells have multiple small vacuoles. Therefore, the correct answer is option D.