Maximum nutritional diversity is found in the kingdom

Step-by-step solution

R.H.Whittaker gave the five-kingdom classification i.e. Monera, Protista, Fungi, Plantae, and Animalia. The maximum nutritional diversity is found in the Monera group and they are the group that does not have a cell nucleus membrane. It is a prokaryote. Bacteria are placed under monera. They are present everywhere. Some bacteria help in nitrogen fixation. Example: Rhizobium . Some bacteria live in hot sulfur springs and they obtain their energy by reduction of sulfur. In this cyanobacteria are also photosynthetic.