Multiple Choice / Discussion Questions

Additional Questions for Study

1. List four features that would place an organism in the animal kingdom.
    
2. What is the main event that happens during gastrulation?
    
3. List the five key steps in the evolution of the animal body plan.
    
4. Approximately when in the history of life did cephalization evolve?
    
5. Describe the main difference between acoelomate and coelomate organisms.
    
6. How do the embryos of protostomes and deuterostomes differ during cleavage?
    
7. What feature distinguishes sponges from other animals?
    
8. Which cell in the sponge can differentiate into a gamete?
    
9. List two features that are distinct to cnidarians
    
10. How does the medusa form of a jellyfish move?
     
11. Some organisms are hermaphrodites. What does this term imply?
     
12. In terms of organ systems, how are flatworms more advanced than jellyfish?
     
13. Flat worms have no cell wall and live in an aquatic environment yet they don’t burst. Why?
     
14. How does the nervous system in a flatworm differ from a hydra?
     
15. How does the internal anatomy of flukes and tapeworms differ?
     
16. Tapeworms are said to be the most specialized of the flatworms. Why?
     
17. List two major differences between flatworms and round worms.
     
18. Why is it difficult to completely eradicate parasitic worms?
     
19. T or F: Rotifers are often smaller than protists but don’t belong to the Protista kingdom.
     
20. According to the fossil record which was the last mollusk group to appear?
     
21. What three features do all mollusks have in common?
     
22. Which group of segmented worms were most likely to have appeared first?
     
23. What evolutionary contribution to body plan is associated with annelids?
     
24. How does sexual reproduction compare in the three groups of worms?
     
25. Compare the osmoregulatory system of a flatworm with an earthworm.
     
26. Discuss the similarities between an open and closed circulatory system.
     
27. What common features are associated with organs for gas exchange?
     
28. How does the intake and digestion of food in a jellyfish differ from earthworms
     
29. Describe how the process of ecdysis occurs.
     
30. With regard to origin, how is the wing of an insect different from a bird?
     
31. Discuss how the structure of the head region of a millipede and a centipede are adapted to their function.
     
32. How does complete metamorphosis differ from incomplete metamorphosis?
     
33. Ticks are insects. TRUE or FALSE Explain your answer
     
34. List some of the external differences/ similarities of insects and crustaceans.
     
35. Why are there no insects that are as big as robins?
     
36. Complete the following chart indicating the key evolutionary changes in animal body plan

    Phylum	Advancement of Body Plan
    Porifera Cnidaria Platyhelminthes Nematoda Rotifer