1. Animal Kingdom Invertebrates
Tour of the Invertebrate Organisms of the Animal Kingdom

2. Invertebrates Are Animals
Animal Characteristics
Eukaryotic
Heterotrophic
Multicellular, specialized cells
Lack Cell Walls
Reproduce, sexual and asexual
Respond to environment
Motile, muscles

3. Specifics to Invertebrates
Characterized by No Backbone!
Other means of structure
Exoskeleton, Spicules, Shells, Pin, Hydrostatics
Invertebrate Fun Facts
95% of all animal species
Sizes range from microscopic to 20 meters

4. Classifying Invertebrates
Body Symmetry
Cephalization Level
Body Plan
Layers of Tissue
Early Development – Protostome or Deuterostome

5. Major Groups Crustacea Platyhelminthes Annelida Porifera Cnidaria
Insecta
Mollusca
Nematoda
Echinodermata ,

6. Things to Consider Level of Classification
Phylum or Class
Common name examples for each
sea star
Type of Symmetry
bilateral
Type of Body Plan
acoelomate, coelomate
Development of systems
Circulatory
Movement

7. Examples- Common names
Invert Tour
Title-Invert Tour- Animals without a backbone. They share the LACK of a trait.
Purpose- Observe and gather information to compare/contrast Invert groups.
Observations and Notes-
Class or Phylum name
Examples- Common names
Type of symmetry
Type of Body plan
systems
R a n k

8. Conclusion-Reference chapters 26-29 Dragonfly
Which invert groups do you believe are the LEAST complex? WHY?
Which invert groups do you believe are the MOST complex?
WHY?
3. List your evolutionary ranking from LEAST to MOST complex. 1. 2. 3. 4. 5. 6. 7. 8. 9.
4. How does YOUR RANKING compare to the BOOK model?
(pgs ) Explain in detail your ranking differences and similarities.