1. What does the Phylum name "Arthropods" mean? _______________________________

2. What material makes up the exoskeleton of Arthropods? ______________________

3. Are the Arthropods "cephalized"? ____________

4. Name the two body sections as demonstrated by the crab ______________ and ______________________

5. How many pairs of legs are found on a crab ? ________________________

6. Where is the abdomen on a crab? ________________________

7. How do you determine sex in a crab? (male above, female below)_______________________________________

8. How many legs are found in:

• A. Lady Bird Beetles __________

  B. Spiders ___________

   

  

• C. Lobsters ____________

9. Although the exoskeleton solves the problem of dehydration, how do they solve the problem of:

• A. Supplying Oxygen to the tissues? _______________________________________

• B. How does animal with an exoskeleton increase in size? ______________________

10. What is an advantage for an animal to have multiple life stages? _____________________

11. What is a major benefit of flight for an insect? ___________________________________

12. Name a distinctive beneficial behavior observed with the ladybird beetles. ______________

13. How many wings does the honeybee have? ____________

14. To which body section are the legs attached? _________________

15. Name the three body sections of insects.

A. _________________________

B. _________________________

C. _________________________

Observe the anatomy of the bee.

16. Why are the rear legs so large? ______________

17. Why are second pair of wings hooked to the first

pair? ______________________________

18. What sex is the worker bee to the right?

_________________________________________________

19. Why isn't the sex of the worker bee not important to the bee? _________________

____________________________________________

24. What does the name "Echinodermata" mean? ___________________________________

25. What kind of symmetry do the echinoderms exhibit? ______________________________

26. The larval stages of the echinoderms exhibit what kind of symmetry (see bottom right)? ___________________

27. What structures in echinoderms enable them to slowly move on the bottom?______________________________

28. What kind of skeletal system does the echinoderms have? ___________________________

29. Name a spherical echinoderm that lacks the five sets arms. __________________

30. The frog has what kind of body symmetry? _____________________________________

31. What kind of skeletal system does the frog exhibit? _______________________________

32. Is the attachment of the frog's legs lateral or ventral? _____________________________

33. Does the attachment of the frog's favor a terrestrial or aquatic environment? _____________

34. Which skeleton type (endoskeleton or exoskeleton) has an advantage for large size (not necessarily for the frog)?________

35. How do the hind legs of frogs help them in water? _________________________________

36. How does the nostril placement help the frog in the water? __________________________

37. If an animal moves forward with any kind of efficiency, what kind of body symmetry would it have? ___________________________________________

40. The organism at the right represents which phylum? ________________________

41. This is part of the plankton, what does that mean?

_____________________________

42. Identify this particular larval form.

______________________________