ZOO 2700 Study Guide - Midterm Guide: Magnetite, Conchifera, Capillary
8 Dec 2013
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Aka mass animals look like plants. Stalk-like neck that supports it (can be retracted) Stored in coelom: funicular system (like a conveyor belt) Connects from digestive system of one to another. Can"t live alone - colony: colonial, multi-ciliated cells (move food, create current) cilia, coelomopores pore allows for gamete to be expelled. Heterozooids: kenozooids, avicularia defensive, vibracula leg-like (can be used as legs, ovicell reproductive. Apomorphies: grasping spines (chitin) on anterior end which can be contained. Venomous: hood, ciliary fences, double-walled lateral fins. From epidermis: stratified epidermis (only invertrbrate with this) Clade: a group consisting of an ancestor and all of its descendants; a branch in the tree of life. Can be node based, stem based, or apomorphy based (best) Apomorphies: four bundles of simple chaeta per segment, chaetae is made of beta chitin. Microvilli attach to chaetae and build it as beta chitin attaches (tube with holes: metamerism.
