1. The Day of WORMS!

2. 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

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

4. Anterior
Posterior
Dorsal
Ventral

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

8. Planaria have the ability to regenerate

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

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

13. How can annelids help our planet?
Vermiculture!

14. 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