3. Animals
What are ANIMALS?
1. Many celled organisms that must get
energy by eating other organisms.
a. Herbivores – animals that eat only plants
a. Carnivores – animals that eat other animals
b. Omnivores – animals that eat both plants
and animals
4. Animals
2. Classified based on the presence or
absence of a backbone.
a. Invertebrates – no backbone (95 % of all
animals)
b. Vertebrates – backbone (only 5% of all
animals)
5. Phylum Cnidaria – “Stinging Cells”
1. Invertebrates
2. All have Stinging cells – nematocysts
3. All marine
4. Simple organisms – just tissue, no
organs
5. Examples:
a. Jelly fish
b. Coral and Anemones
“Cnidarians”
7. Phylum Annelida – Segmented
Worms
1. Invertebrates with segmented body parts
2. Bristles (hairs) on body
3. Land and marine
4. Examples:
a. Earthworms
b. leeches
“Annelids”
9. Phylum Mollusks – Muscular foot
1. Invertebrates
2. Mantle – shells
3. Land and marine
4. Examples:
a. Snails and slugs
b. Octopus and squid
c. clams
“Mollusks”
14. Phylum Arthropoda – “Jointed
Appendages”
1. Invertebrates
2. Exoskeleton of chitin
3. Jointed appendages
4. Land, marine and air
a. Most successful of all animals
b. 75% of all organisms on earth
c. Insects – 6 legs
d. Arachnids – 8 legs
5. Examples:
a. Insects and spiders
b. Crabs and crustaceans
“Arthropods”
17. Phylum Chordata – Backboned
animals
1. Vertebrates
2. Endo skeleton – inside of body
3. Land, marine and air
4. Most diverse phylum, many different types
5. Examples:
a. Amphibians
b. Fish
c. Reptiles and birds
d. Mammals (humans)
“Chordates”
19. Questions
1. What phylum of organisms is the
largest?
2. What phylum has radial symmetry and
tube feet?
3. Arthropods have an exoskeleton made
up of ?
4. Which phylums are vertebrates and
which ones are invertebrates?
