Which biological taxonomy category includes groups like Plantae and Protista?

The category of biological taxonomy that includes groups such as Plantae and Protista is the Kingdom. In the hierarchical system of classification, kingdoms represent one of the highest levels, where organisms are broadly classified based on fundamental characteristics.

For example, the Kingdom Plantae encompasses all plants, which share traits such as being multicellular, autotrophic (able to produce their own food through photosynthesis), and having cell walls made of cellulose. On the other hand, the Kingdom Protista includes a diverse group of mostly unicellular organisms that do not fit into the other kingdoms, encompassing a variety of life forms, such as algae and protozoa.

By grouping these various organisms into kingdoms, biologists can organize the immense diversity of life on Earth and understand the relationships and characteristics that define different groups of living organisms.