There are six kingdoms. what is the sixth kingdom? there is...

Animalia -- all multicellular, heterotrophs (feed off other organisms)

Plantae -- all multicellular, photosynthetic (convert sunlight to energy), autotrophs (self-feeders)

Fungi -- some single but mostly multicellular, eukaryotic

Protista -- single celled eukaryotic (complex cell) organisms, may live in colonies

Monera -- single celled, prokaryotic (simple cell) organisms, may live in colonies