1. PARTII: COMPLEX ANIMALS
CHAPTER 8

2. Ch 7 and 8 Outline INVERTEBRATES VERTEBRATES 7. Phylum: Arthropods
Phylum: Sponges
Phylum: Stinging cell
Phylum: Flatworm
Phylum: Roundworm
Phylum: Segmented worms
Phylum: Mollusk (soft-bodied)
7. Phylum: Arthropods
Class
Insecta
Arachnid
Crustacean
8. Phylum: Echinoderms
Starfish
VERTEBRATES
Phylum: Chordate
Class
Jawless Fish
Cartilage Fish
Bony Fish
Amphibians
Reptiles
Birds
Mammals

3. Arthropods (Jointed-legs)
Invertebrate
Largest phyla (3/4 of all animals on earth!!)
Exoskeleton
Segmented body
Head
Thorax
Abdomen
Bilateral symmetry
Appendages
Legs, wings, antennae
Grow by molting

4. 1. Arthropod Class: Arachnid
8 legs ( 4 pairs)
No antennae
2 body segments
Spiders, scorpions, ticks

5. 1. Arthropod Class: Insecta
6 legs (3 pairs)
3 body segments
2 pairs of wings (most)

6. 1. Arthropod Class: Crustacea
Sowbug
Mostly Marine animals
2 pairs of Antennae
4 pairs of walking legs
Some...1 pair of “pinchers”
Crab, lobster, shrimp,
crayfish
Crayfish

7. Spiny-skin animals (a.k.a. Echinoderm)
Radial symmetry
“Spines” on skin
5-part body
Tube feet used for
movement, feeding, attachment.
Example: starfish
Tube feet

8. Vertebrates *(Chordates)
Backbone
Endoskeleton
Most complex of all animals
7 Classes of Vertebrates

9. 1. Jawless Fish All aquatic (live in water) Cold-blooded
Breathe with gills
No jaws
No scales (smooth skin)
No bone
Made of cartilage
Ex: Lamprey
parasitic
Lamprey

10. 2. Cartilage Fish Skeleton made of Cartilage
Jaws, scales, and paired fins
Examples:
Sharks
rays

11. 3. Bony Fish Largest class of fish Skeletons are made of bone
Swim bladder
Fills with gas….floats
Empties…sinks

12. 4. Amphibians Lives on water and on land (webbed feet)
Cold-blooded (may hibernate)
Fertilization in water. Why?
Breathe = lungs and/or gills, and thru skin
Can be poisonous…(poison dart frog)
Tree Frog
Salamander

13. 5. Reptiles Dry scaly skin Cold-blooded
Terrestrial (live and reproduce on land)
Eggs with shell…why important?
Most have claws
Anaconda killing a crocodile

14. 6. Birds Warm blooded Wings, beak, 2 legs Feathers Shelled eggs
No teeth…beak adapted to food
Hollow bones
Why important?
Ostrich:
World’s largest bird

15. 7. Mammals Warm blooded Females : mammary gland
Hair (whales and dolphins???)
Develop offspring inside the body, except…
Kangaroo: pouch
Platypus: egg-laying

16. Examples of mammals...
How are whales & dolphins different than other mammals? What are their adaptations?