BIOL 2P92 Lecture Notes - Lecture 15: Acontia, Mollusca, Ctenophora
27 Mar 2016
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Quiz 1: flagellated cells that line the canals of the sponge are called, choanocytes, choanocytes are lagellated cells that line the canals and chambers of sponges. Class calcarea sycon: class calcarea calcium carbonate with 1 to 4 rays. Class demospongiae siliceous spicules not six rayed internal buds of sponges that can withstand adverse condiions called. Porocytes are doughnut shaped cells that regulate water intake: sponges are composed of disinct issues, false, porifera are parazoa and are not organized into true issue, pinacocytes - thin epithelium cells that form a protecive covering. Porocytes - regulate water intake into the sponge. Archaeocytes - can perform a number of funcions including reproducion and phagocyize paricles. Sponges have a gut: a gut is a synapomorphy of eumetazoa, the clade of all metazoans besides sponges. Class cestoda tapeworm: of the following cell types found in sponges, which one forms a thin outer layer, pinacocytes, siphonoglyph increase the low of water into the pharynx.
