Unicellular life

Amoeba

Amoeba

Dinoflagellates

Dinoflagellates

Anatomy of the Paramecium

Anatomy of the Paramecium

Types of protista

Types of protista

Frontonia

Frontonia

Phytoplankton

Phytoplankton

Ceratium

Ceratium

Volvox

Volvox

Protista are microscopic, mainly unicellular organisms, i.e. consisting of one cell only. Unlike Monera, which have no distinguished nucleus, Protista have a nucleus and this is why they are called eukaryotes. Their genetic material (DNA) is in the nucleus, wrapped in a membrane that separates it from the cytoplasm.