How does the squid shape fit with its lifestyle

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1. Why does the worm need a well-developed digestive system?

2. How does the squid's shape fit with its lifestyle?

4. What differences are there between different arms? How do they function?

5. What functions do the chromatophores have?

6. How does the digestive system (including mouthparts) differ between the squid and the worm? Why?

7. Why is the shape of the squid eye different from that of humans?

8. Why does the squid have a pen rather than a shell?

9. What number and type of head appendages does a crayfish have? What sort of feeding do the mouthparts look good for?

10. How many legs are there (including claws) in the crayfish? What differences do you see in the legs, and what might the functions be?

11. What are the functions of the body shape and color in the crayfish?

12. What organ or organs seem to take up a lot of space in the crayfish? What do they do?

13. The water vascular system is unique to echinoderms. What functions is it involved in?

14. Why does the starfish have a different symmetry pattern - how is its lifestyle different?

15. What would be different about the excretory system functioning in each of the species?

16. How do the digestive systems seem to compare in complexity and size of parts?

17. How are the respiratory structures different?

18. How is the complexity of the sensory structures and nervous system different? How does this relate to their life habits?

Reference no: EM132721391

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