Practical Material

Practical Material - Insects flying crustaceans?...

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Insects – flying crustaceans? Echinoderms: water vascular system : locomotion, feeding, respiration, forms a hydrostatic skeleton Endoskeleton: calcareous ossicles Phylum: Echinodermata Class: Asteroidea Examples: sea stars -tube feet with suckers -cardiac stomach: everts stomach into bivalves, put digestive juices into prey Phylum: Echinodermata Class: Ophiuroidea Examples: brittle stars -entire arms used for walking -narrow arm distinctly set off from central disk -lack suckers Phylum: Echinodermata Class: Echinoidea Examples: sea urchins, sand dollars, sea biscuits -aristotle’s lantern: feeding structure, 5 jaws in vice like point -tube feet w/ suckers Phylum: Echinodermata Class: Holothuroidea Examples: sea cucumbers -soft, floppy body -suckered tube feet -small osscicles Phylum: Echinodermata Class: Crinoidea Examples: sea lilies -5+ arms Phylum Chordata -notochord: rod-shaped body found in embryo -dorsal hollow nerve cord -pharyngeal slits: slits in pharynx used in filter feeding or respiration -post-anal tail -endostyle: secretes mucus that traps food, located in pharynx Phylum Chordata Subphylum Urochordata – Tunicates
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Practical Material - Insects flying crustaceans?...

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