Auxospores and hormogonia are formed,
respectively, by
(a) some diatoms and several cyanobacteria
(b) some cyanobacteria and many diatoms
(c) several cyanobacteria and several diatoms
(d) several diatoms and a few cyanobacteria.
respectively, by
(a) some diatoms and several cyanobacteria
(b) some cyanobacteria and many diatoms
(c) several cyanobacteria and several diatoms
(d) several diatoms and a few cyanobacteria.