(i) Hormogonia are motile filaments of cells formed by some cyanobacteria.
(ii) They are formed during asexual reproduction unicellular, filamentous cyanobacteria.
(iii) The thick walled hormongonium is referred to as hormocyst. Hormocysts are helpful in reproduction.
(iv) Unicellular cyanobacteria which reproduce binary fission is Chroococcus.
