Page 78 - Primary Six Notes

Invertebrates

These are animals without a back bone.
They are multicellular animals.

Classes of invertebrates

1. Coelenterates

2. Echinoderms

3. Sponges

4. Worms

5. Molluscs

6. Arthropods

Coelenterates

 They have cylindrical bodies with only one opening which
acts as the mouth and the anus.

 They have stinging cells on the tentacles surrounding the

openings.

 They live in water.

Examples of coelenterates

Corals, Jelly fish , Hydra , Sea anemone.