Consists of a heterogeneous group of eukaryotic organisms

They are unicellular, heterotrophic and many have mobility through different mechanisms

They have certain similar characteristics to fungi, but they are very different

Are multicellular and filamentous, with cell walls made of cellulose, they are linked to the aquatic enviroment and they can also decompose organic matter

They can be unicelular or multicellular, and live in aquatic enviroment, freshwater or saltwater. They are autotrophic, all contain chlorophyll, they have cell walls made of cellulose and many are used for medicine and food

Green algae: Have the combination of chlorophyll a nd bfor photosyntesis.

Brown algae: Always live in the water.

Red algae: They are part of coral reefs

Contains eukaryotic species that are very different to plants and algae, they do not carry out photosynthesis.

They can be unicellular or multicellular, their cells are not organised, and do not form real tissue, their cells animals with wich they have a common ancestor.

The mos famous are those that compose mushrooms.

They body is in reality a group of filaments or hyphae formed by cells.