Classification of Invertebrates
The category invertebrates can be broken down into the following:
1. Worms: 3. Stinging cells: 5. Soft bodied:
a. Two body opening a. Tentacles that sting a. External/Internal shells
b. Simple nervous system b. One body opening b. Have a foot or tentacles
c. Live in water c. Most have shells
2. Jointed legs: 4. Spiny-skinned: 6. Sponges
a. More than one body section a. Bodies in five parts (like a star) a. No body openings
b. Exoskeleton b. Covered in spikes or spines b. No muscles/nerves/organs
c. External skeleton made of lime c. Live in water
1. Worms: 3. Stinging cells: 5. Soft bodied:
a. Two body opening a. Tentacles that sting a. External/Internal shells
b. Simple nervous system b. One body opening b. Have a foot or tentacles
c. Live in water c. Most have shells
2. Jointed legs: 4. Spiny-skinned: 6. Sponges
a. More than one body section a. Bodies in five parts (like a star) a. No body openings
b. Exoskeleton b. Covered in spikes or spines b. No muscles/nerves/organs
c. External skeleton made of lime c. Live in water