Pyrrophyta A Phylum of phytoplankton that are a large group of very diverse pigmented or colorless unicellular organisms possessing two flagella which differ in structure and position according to species.
(A Phylum of phytoplankton; are; a large group of) (colorless unicellular organisms; possessing; very diverse pigmented or colorless unicellular organisms possessing two flagella which differ in structure and position according to species) (two flagella; differ; in structure and position)
A Phylum of phytoplankton colorless unicellular organisms two flagella
are possessing differ
a large group of
very diverse pigmented or colorless unicellular organisms possessing two flagella which differ in structure and position according to species
in structure and position