Causative agent of rhinosporidiosis is ?

Ans: is. 'a' i.e., Bacteria "Molecular studies have shown that the organism is not a fungus, but a primitive aquatic bacterium". "By using molecular tools, recently it has been found that R. seeberi is not a fungus but an unusual protist that shares phylogenetic features with microbes that cause infection in fish" "The etiological agent, Rhinosporidium seeberi, has never been successfully propagated in vitro. Initially thought to be a parasite for more than 50 years, R seeberi had been considered a water mould. Molecular biological techniques have recently demonstrated that this organism is an aquatic protistan parasite. It is currently included in a new class, the mesomycetozoea, along with organisms that cause similar infections in amphibians and fish".