1. Kingdom Animalia

2. All members of Kingdom Animalia share several common characteristics Multicellular eukaryotes Heterotrophic (must eat) Produce sex cells (sperm and egg) Move

3. Animal Phyla 34 total phyla in kingdom Animals are classified into phyla based on several different criteria including: –Body symmetry –Level of organization

4. Types of symmetry Asymmetry- (no symmetry) Radial symmetry- Circular shape- two identical halves result no matter how the animal is cut Bilateral symmetry-Identical right & left halves

5. Asymmetry

6. Radial Symmetry

7. Bilateral Symmetry

8. Levels of Organization Cellular- animal is made of many cells, none of which work together Ex. Sponge

9. Levels of Organization Tissue- Cells work together to form specialzed tissues like muscle tissue Ex. Jellyfish (Cniderians)

10. Levels of Organization Organs- Cells form tissues that work together to form organs that do a specific job (like a heart, or lung)

11. Phylum Porifera (sponges)

12. Aquatic, marine animals Sessile (doesn’t move) filter feeder Saclike bodies with many pores Asymmetrical

13. Phylum Porifera (sponges) Cellular level of organization Reproduce asexually by budding –If a piece breaks off, then both will continue to live and grow

14. Phylum Cnideria (jellyfish)

15. Tubular, or bell shaped animals that live in shallow coastal marine waters Have specialized stinging cells called cnidocytes Organized into tissues Radially symmetrical

16. Phylum Nemertea (Ribbon worms)

17. Bilaterally symmetrical Usually marine worms Have a distinct proboscis to capture prey, for defense, locomotion and for burrowing Organ level of organization

18. Phylum Platyhelminthes (Flatworms)

19. Are often parasites Include tapeworms & flukes Bilaterally symmetrical Free living flatworms are even more complex, having a head, and well developed nerves and brain

20. Phylum Nematoda (Roundworms)

21. Found in marine, freshwater and terrestrial environments Some are predators with teeth and mouth parts, while others are parasites.

22. Phylum Nematoda (Roundworms) More complex than flatworms & ribbon worms, they have a complete digestive tract, with a mouth and anus Ex. Hookworms, Trichinella, & pinworms

23. Phylum Mollusca

24. Have a three part body plan- visceral mass, mantle and foot Include clams, oysters (bivalves), squid(cephalopods), snails (gastropods) & octopi

25. Phylum Mollusca Mostly marine- also freshwater and some terrestrial (land) Organized on the organ level

26. Phylum Annelida

27. Segmented worms (like earthworms and leeches) Specialized digestive tract Well developed heart, with a closed circulatory system (have blood vessels) Marine, freshwater and terrestrial

28. Phylum Arthropoda

29. Over one million species Have jointed appendages- head, thorax, & abdomen Have an exoskeleton that they periodically molt Ex. Spiders, crayfish, insects

30. Phylum Echinodermata

31. Have an internal skeleton Radially symmetrical Include sea stars and sea lillies Well developed organs and systems (nervous, circulatory, respiratory, etc)

32. Phylum Chordata

33. Most advanced animals Well developed brain and central nervous system Bilaterally symmetrical Include birds, fish (bony and cartilage), amphibians, reptiles, & mammals. All reproduce sexually