The Day of WORMS!.

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Presentation transcript:

The Day of WORMS!

Characteristic What it means Level of Organization Body Symmetry REMINDER: Characteristics we use to investigate animals Characteristic What it means Level of Organization Body Symmetry Cephalization Body Cavity Formation Mode of Reproduction Energy Source Motility

Yesterday we looked at: Phylum Porifera Phylum Cnidaria Phylum Ctenophora Anenomes Sponges Comb Jellies Jellies Coral

Anterior Posterior Dorsal Ventral

Phylum Platyhelminthes - FLATWORMS marine flatworms planaria (freshwater) flukes Tapeworms acoelomate some are parasitic

Planaria have the ability to regenerate

Phylum Nematoda - Ribbon Worms most are parasitic great bioindicator pseudocoelomate sexual reproduction (internal fertilization)

Phylum Annelida - Segmented Worms coelomates segmented (repeating segments) hermaphrodites free living

How can annelids help our planet? Vermiculture!

Station #3 Annelida Station #1 Platyhelminthes Dissection earthworm. Use a stereoscope to see the various external and internal structures Look at platyhelminthes under a scope, look at the various diagrams in folder Station #2 Nematoda Look at Ascaris under a scope, look at the various diagrams in folder of parasite life cycles