Study Questions Mollusks, Worms, Arthropods, Echinoderms
1. Explain the difference between the three types of mollusks and give an example for each.
2. Look for and find three mollusks that contain shells that you have collected at the beach or seen in a store or museum. Were you surprised at the animal that lived in those shells? Why or why not?
3. Describe how the cephalopod is different from other mollusks.
4. In the video clip with the squid jetting itself forward, which way has the squid gone? You may need to watch the video a few times; the action is very rapid. Describe how the squid has accomplished this.
5. What makes the planarian so unique?
6. What makes the leech so unique?
7. What types of worms are leeches most similar too?
8. Describe how a leech can help a patient in surgery.
9. Describe the main difference between an earthworm’s circulatory system and your own.
10. Why should we not call the sea star the popular term, “star fish”?
11. Provide a step-by-step description of how a sea star capture and eats its prey.