1. Animals
By: Mrs. Eash

2. Animals -all grow, change, reproduce, and respond to environment
-all made of cells
-all grow, change, reproduce, and respond to environment
-energy from food
-MOST have symmetry
Invertebrates
(without backbones)
- 95% of animals
-all shapes and sizes
Vertebrates
(with backbones)
-allows larger, heavier animals to move

3. Animals Without Backbones
6 Invertebrate groups
Mollusks
Cnidarians
Sponges
Echinoderms
Arthropods
Worms (roundworms, flatworms, segmented worms)

4. Mollusks Invertebrates with soft bodies Has a shell Most live in water
Inside or outside body
Most live in water
Clams, oysters (don’t move)
Squid, octopus
Only on land are snails and slugs

5. Cnidarians Armlike parts called tentacles Stay in one place
Tips have stinging cells
Stuns prey
Stay in one place
coral
Float or swim
jellyfish

6. Sponges Adults stay in one place (babies can float)
Simplest invertebrate
Vary in size
Body full of holes
Water flows through, carries food, food is trapped
Filters a lot of water during one day
Smell or taste bad to avoid predators

7. Echinoderms Spiny skin Endoskeleton (inside) Sea Stars (Starfish)
Tiny, tubelike feet
5 arms, no head
Feet move around
Wrap feet around oyster and open the shell for food
Sea Urchins

8. Arthropods Largest invertebrate group Jointed legs
Body divided into 2 or 3 sections
Exoskeleton
Crustaceans
Crabs and shrimp
2 pair of antennae, 2 to 3 sections
Can chew

9. Arthropods Insects Centipedes Millipedes Arachnids
Largest group (almost 1,000,000)
1 pair of antennae, 3 pairs of legs, 1 or 2 pairs of wings, and 3 body sections
Arachnids
Spiders, ticks, and scorpions
4 to 5 pairs of legs, 2 body sections, fangs
Centipedes
One pair of legs on each section
Millipedes
2 pairs of legs on each section

10. Worms Earthworm -type of segmented worm Tapeworm - type of flatworm
Roundworm
-one way digestive system
- Live inside other animals
Tapeworm
- type of flatworm
Simplest worm
Lives inside other animals