Kingdom Animalia Subkingdom Parazoa Phylum Porifera Quiz

Porifera is a multicellular organism that has a cellular level of organization. They are sedentary and sessile and found attached to the rocks. Mostly found in marine water except for Spongilla, Spongilla lives in freshwater. They show asymmetry except for Leucosolenia and Scypha. They are Dipploblastic that is whose body wall consists of the dermal layer and gastral layer. In between these two layers is a noncellular mesohyl layer. In sponges calcareous or siliceous spicules or sponge fibers present. The body of the sponge is perforated by numerous pores called Ostia and a single large opening osculum. The canal system helps the sponge in nutrition, respiration, excretion, and reproduction. There are three types of canal systems is present in Porifera first one is Ascon, the second is Sycon and the last one is Leucon. So, take this quiz and increase your knowledge about kingdom Animalia, sub-kingdom Parazoa, phylum Porifera.