For 10 points, name this animal phylum possessing characteristic pores through which water is drawn.
The first extant example, Paleophragmodictya, contained a reticulated net of megascleres reminiscent of the modern hexactinellid variety and they compose the basal branch of metazoans. Some species can form internal buds known as gemmules and they posses three main body plans, the Asconoid, Syconoid, and Leuconoid. The genus Aplysina can be affected by red band syndrome, and water flow through ostia is achieved by flagella located on choanocytes. Members posses a gelatinous matrix called mesoglea which houses collagenous skeletal elements as well as calcareous and siliceous spicules. For 10 points, name this animal phylum possessing characteristic pores through which water is drawn.
The first extant example, Paleophragmodictya, contained a reticulated net of megascleres reminiscent of the modern hexactinellid variety and they compose the basal branch of metazoans.
{Sponges} or {Porifera}