"Colponema" is a colorless biflagellate with a pronounced ventral feeding groove. Biflagellate spores are typed as female (+) gametes, male (-) gametes, or asexual biflagellate zoospores. The flagellate is pear-shaped and biflagellate&colon; this means that it has two flagella. However, flagella do occur among the Archamoebae, and many slime moulds produce biflagellate gametes . The sperm is biflagellate, they have two flagellae that aid in propulsion. The sperm of mosses is biflagellate, i.e. they have two flagellae that aid in propulsion. The biflagellate sperm must swim from the antheridia, or else be splashed to the archegonia. The resulting zygote is initially biflagellate, but it soon encysts and germinates. Zoospores are biflagellate motile spores responsible for the polycyclic qualities of this disease.