why is planaria a type of sporozoan? Which is its spore stage

Asked by gnanaguruv | 23rd Aug, 2018, 08:04: PM

Expert Answer:

Several species of obligate intracellular protozoan parasites are classified as sporozoa or sporozoans, because they form reproductive cells known as spores. In sporozoans, the mode of nutrition is parasitic.

Planaria is an acoelomate which is parasitic in nature and carries out extracellular digestion. It is a sporozoan because it reproduces through cells called spores. The sporozoa reproduction cycle has both asexual and sexual phases. The asexual phase is termed schizogony in which merozoites are produced through multiple nuclear fissions. The sexual phase is known as sporogony and is followed by gametogony or the production of sexually reproductive cells termed gamonts

Answered by Sheetal Kolte | 24th Aug, 2018, 11:28: AM