Marine Science Study Guide
Unit 4: Test 2
Cnidarians
1. What are some examples of cnidarians?
2. What are the two main character traits of cnidarians?
3. What two major adaptations evolved in cnidarians that we do not see in sponges?
4. How do cnidarians feed?
5. How do cnidarians move?
6. How do cnidarians defend themselves?
7. Explain in detail what nematocysts are, and how they function.
8. Draw and provide explanations for all stages of the moon jelly life cycle.
9. What are the names of the adult and juvenile stages of the moon jelly life cycle?
10. Describe reproduction in the moon jelly.
Mollusks
11. How many different species of mollusks are there?
12. What are some examples of mollusks?
13. What are the three main character traits of mollusks?
14. What major adaptation evolved in mollusks that we do not see in cnidarians or sponges?
15. Describe the function of the three main character traits.
16. What are the three classes of mollusks?
17. How are the three different classes of mollusks similar, and how are they different?
18. Describe the ways in which different mollusks move.
19. Describe the ways in which different mollusks feed.
20. Describe the ways in which different mollusks reproduce.
21. Describe the ways in which different mollusks defend themselves.
22. How do mollusks obtain oxygen from the water?
23. Draw and label the internal anatomy of both a bivalve and a gastropod.
24. What are the four types of cephalopods that exist today?
25. What are the two main differences between cephalopods and other mollusks?
26. What are chromatophores, and what is their function?
27. Be able to label a diagram of a squid, and explain the functions of all the various body parts.