2. Ch. 25 & 26

3. 100 200 400 300 400 Sponges & Cnidarians Flatworms & Roundworms Animal Characteristics Vocabulary 300 200 400 200 100 500 100

4. Row 1, Col 1 How do sponges obtain their food? Filter feeding

5. 1,2 What phylums do flatworms and roundworms belong to? Platyhelminthes & Nematoda (respectively)

6. 1,3 Name 3 specific characteristics of animals. Eukaryotic, multicellular, heterotrophic, no cell walls

7. 1,4 Digestion in cnidarians takes place in the: Gastrovascular Cavity

8. 2,1 Describe the ‘tissues’ of sponges. Lack true tissue; endo and ectoderm only

9. 2,2 What is the name given to free swimming flatworms? Planarians

10. 2,3 Distinguish between: Acoelomate Psuedocoelomate Coelomate No body cavity, partially lined with mesoderm cavity, Completely lined with mesoderm cavity

11. 2,4 An animal whose blood moves throughout its body within blood vessels has a(n) Closed Circulatory System

12. 3,1 What are the 3 classes in Phylum Cnidaria and what organisms are found within them? Hydrozoa: hydras, Scyphozoa: jellyfish, Anthozoa: s.a. & coral

13. 3,2 Name 3 characteristics about Nematodes. Pseudocoelomate, digestive track w/ 2 openings, bilateral symmetry

14. 3,3 The embryo layer that forms the skin and nervous tissue is the: Ectoderm

15. 3,4 A parasitic tapeworm has a knob-shaped head, called a(n) __ by which the worm attaches itself to the host’s internal wall. Scolex

16. 4,1 Describe the nervous system of a cnidarian. Nerve Net w/o control center – very simple

17. 4,2 What are the most common parasites living in children in the United States? Pinworms

18. 4,3 Animals with bilateral symmetry find food and mates and avoid predators more efficiently because…. They have the ability to see in all directions

19. 4,4 Sponges are considered ______ because an individual sponge can produce both eggs and sperm. Hermaphrodites

20. 5,1 Explain the different body forms possible for organisms in Phylum Cnidaria Polyp & Medusa p.700

21. 5,2 Describe the life cycle of a fluke. p. 710

22. 5,3 If the gastrula develops into a mouth, the organism will be a: Protostome

23. 5,4 A tapeworm has its reproductive organs in segments called: Proglottids