Symmetry
Asymetry Radial Symmetry
Bilateral Symmetry
Gut
• Incomplete – sac body plan
• Complete – tube-within-a-tube body plan
Primary Tissues
• Endoderm – inner surface tissue lining the gut.
• Mesoderm – internal tissue sandwiched between exterior & interior.
• Ectoderm – outer surface tissue.
Body Cavities
• Acoelomate, Pseudocoelomate, Coelomate
Protostomes vs Deuterostomes
Animal Phyla
Protostomes:• Porifera• Cnidaria• Platyhelminthes• Nematoda• Mollusca• Annelida• Arthropoda
Deuterostomes:
• Echinodermata
• Chordata
Porifera
• Sponges
• Jellyfish,
Hydras
Cnidaria
Platyhelminthes
• Flatworms
Nematoda
• Smooth Roundworms
Mollusca
• Mollusks – snails, slugs, clams, octopi
Annelida
• Segmented Roundworms
Arthropoda
• Insects, millipedes, centipedes, spiders, ticks, crustaceans, crabs, lobsters, shrimp, scorpions.
Chordata• Eels, fish, amphibians, reptiles, birds,
mammals…humans
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