Chapter 33 – Animal Diversity and the Evolution of Body Plans
11. Given the distribution of the 30 or so animal phyla across the Earth’s various ecosystems,
what would be the most likely habitat for the origin of animals?
Chapter 33 – Animal Diversity and the Evolution of Body Plans
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
Gather Content
•
What do you already know about animal phyla?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 33 – Animal Diversity and the Evolution of Body Plans
Fill in the Blank Questions
12. Eumetazoa can be subdivided into two principal branches based on ____.
13. In all deuterostomes, the cells divide parallel to and at right angles to the polar axis. This
pattern is called _______________.
14. In the animal subkingdom _____, the animals lack symmetry and possess neither tissues
nor organs.
Chapter 33 – Animal Diversity and the Evolution of Body Plans
15. The embryonic layer found only in bilaterally symmetrical eumetazoans is the ______.
16. Animals with a body cavity located between the mesoderm and endoderm are _____.
17. In a _____ circulatory system, circulation of blood is more controlled—the blood is
moved faster and more efficiently than in other types of circulatory systems.
18. Two outwardly dissimilar groups, the ____________ and the chordates, together with a
few other small phyla, constitute the deuterostomes.
Multiple Choice Questions
Chapter 33 – Animal Diversity and the Evolution of Body Plans
19. Of the following combination of statements about protostomes and deuterostomes, which
choice is correct?
20. Protostomes develop through
Chapter 33 – Animal Diversity and the Evolution of Body Plans
21. In animals that display indeterminate development
22. A biologist discovered a new animal. Upon studying its embryonic development, she
observed radial cleavage with the blastopore developing into an anus. This animal was
categorized as a
Chapter 33 – Animal Diversity and the Evolution of Body Plans
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
Gather Content
•
What do you already know about animal development?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 33 – Animal Diversity and the Evolution of Body Plans
23. Solid worms that lack a body cavity are known as
24. Which of the following terms is mismatched with its meaning or characteristics?
25. What are the three animal phyla that dominate animal life on land?
Chapter 33 – Animal Diversity and the Evolution of Body Plans
26. Segmentation is the subdivision of the body into segments or metameres. True
segmentation is found in which of the following phyla?
27. Molecular data confirm that cnidarians branched off from the rest of animals before
____________ evolved.
28. Parazoa
Chapter 33 – Animal Diversity and the Evolution of Body Plans
29. Which one of the following terms applies to the phylum Arthropoda?
30. Which one of the following terms applies to the phylum Mollusca?
31. Which one of the following terms applies to the phylum Platyhelminthes?
Chapter 33 – Animal Diversity and the Evolution of Body Plans
32. Which one of the following terms applies to the phylum Nematoda?
33. Which one of the following terms applies to the phylum Cnidaria?
34. Select the phylum that includes deuterostome animals that are exclusively marine and
have radial symmetry as adults.
Chapter 33 – Animal Diversity and the Evolution of Body Plans
35. Which one of the following terms applies to the phylum Bryozoa?
36. Select the following phylum that includes protostome animals that are segmented,
bilaterally symmetric, and have a chitinous exoskeleton.
37. Which one of the following applies to the phylum Ctenophora?
Chapter 33 – Animal Diversity and the Evolution of Body Plans
38. Select the following phylum that includes coelomate, bilaterian animals that have a
structure called a notochord.
39. Select the following phylum that includes animals that are unsegmented, acoelomate, and
have a digestive cavity with a single opening.
40. Which one of the following features is unique to animals?