Biota can be understood as the collective term for all lifeforms in a given ecosystem, including bacteria, plants, fungi and animals.
Biota are the living building blocks of ecosystems. Biota are lifeforms with a primarily prokaryotic cellular organisation (lacking a nucleus) or more complex eukaryotic cellular organisation (with a nucleus). They are classified on the basis of their relatedness and evolutionary history and using hierarchically structured categories, e.g. the five overarching kingdoms Animalia, Fungi, Monera, Plantae and Protista.