Porifera and Cnidaria

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Requirements

1. Why are sponges considered animals?

2. Why are they considered filters?

3. Name at least two characteristics of sponges.

4. What does the name Cnidaria mean? What animals form part of this group?

5. What are ctenopfora? What differentiates them from cnidaria?

6. What precautions should be taken when finding a jellyfish?

7. In what environment do sponges live? Cnidaria?

8. What can be done if stung by a jellyfish?

9. Draw a jellyfish and identify its main parts.

10. What is the importance of coral reefs?

11. What is the biggest coral reef in the world?