AEBI 211 Lecture Notes - Lecture 20: Aurelia Aurita, Cnidaria, Sponge
Document Summary
Primitive species; must know developmental stages and body forms (lab 1). Testable specimens: amoeba sp. (slide, trypanosoma sp. (slide, scypha (slide, hydra (slide, moon jelly (life stages, adult external, sea anemone (internal) Protozoa: single-celled eukaryotic organisms: no cell wall, no organs, cytoskeleton. Porifera: multi-cellular organisms: sponges, pore and canal system. Cnidaria: multi-cellular with tissue-level organization: radial symmetry, two body forms. Testable specimens: flatworm (slide, tapeworm (slide, external anatomy, roundworm (internal and external, mussel (internal and external, snail (external, radula slide, squid (internal and external) Roundworms: possess a true body cavity, sexual dimorphism (male & female are different). Testable specimens: clamworm (external anatomy, earthworm (internal & external, starfish (internal & external, sea urchin (external, sea cucumber (external) Oligochaeta: segmented worms with clitellum (secrete egg capsules into which eggs are laid). Echinodermata: central disk with 5 arms, pentaradial symmetry, dermal endoskeleton. Testable specimens: horseshoe crab (external), garden spider (external), centipede (external), milliped (external), crayfish (internal and external), grasshopper (internal and external).
