1. Echinoderms – Spiny Skin
Echinoderms movies

2. Echinoderms Are: Starfish Sea Lilies Feather Stars Basket Stars
Sea Urchins
Sea Cucumbers
Sand Dollars

3. There are 5 characteristics:
Radial Symmetry
Spiny skin
Internal skeleton
Water vascular system
Tube feet

4. The internal skeleton of an echinoderm is made of calcium carbonate bony plates that are bumpy or spiny for protection.
An echinoderm’s water vascular system is a system of canals that carry food and oxygen and remove wastes.
The water vasuclar system also helps an echinoderm move.

5. Echinoderms have tube feet used for moving and getting food.
Tube feet movie 2
Tube feet movie

6. Reproduction
Sexual
Larva Stage
Reproduction Movie

7. 5 Class of Echinoderms Crinoidea- Sea Lillies
Ophiuroidea- Brittle Stars
Echinoidea- Sea Urchins and Sandollars
Holothuroidea- Sea Cucumbers
Asteriodea- Starfish

8. Crinoidea (kri-NOID-ee-uh)
sea lilies and feather stars
sessile and mobile
5 arms extend and branch
tube feet filter feed and respire
mouth faces up

9. Ophiuroidea (OH-fee-yoor-OID-ee-uh)
long narrow, flexible arms – move quickly
basket stars

10. Echinoidea (EK-uh-NOID-ee-uh)
sea urchins and sand dollars
endoskeleton called test
sea urchins eat by scraping algae with jaw-like Aristotle lantern
Sand Dollars live along seacoasts
short spines used for locomotion
sand dollars

11. Holothuroidea (HOH-loh-thuh-ROID-ee-uh)
Sea Cucumbers– soft body
Armless, they burrow
Tube feet around mouth
Sea cucumbers movie
Sea Cucumber movie 2

12. Asteriodea (AS-tuh-ROID-ee-uh)
sea stars
5 to many arms

13. A starfish is able to re-grow it’s arms.
A starfish uses its tube feet to move and to open it’s food (bivalves).

16. Digestive Gland Reproductive Gland/Gonads

17. Starfish Eating
Canals and Stomach

18. Water Vascular System

19. Kingdom of Animals Invertebrates
Porifera – Sponges
Flatworms – Turbellaria, Trematoda,,Cestoda
Roundworms- Nematoda
Rotifers
Mollusks – Gastropoda, Bivalves, Cephalopods
Annelida- Oligochaeta, Polychaeta, Hirudinea
Cnidarians- Hydrozoa, Scyphozoa, Anthozoa
Arthropods – Crustacians, Arachnids, Myriapods and Insects
Echinoderms – Crinoidea, Ophiuroidea, Echinoidea, Holothuroidea, Asteriodea.

20. Invertebrate Exam
Be able to identify organisms by Phylum and Class/Order name.
Know characteristics of organisms – reproduction, eating, body plan, special features, etc.
Be able to identify structures off of dissections we have done.