33 Invertebrates Ap Biology Guide Answers
What do the root words that name this group mean? ecdyso– –zoan
26.
Phylum Nematoda includes the worms we often call roundworms. Their bodies are cylindrical, unlike those of the flatworms, and lack segmentation. What makes up the body covering of a nematode? Copyright © 2010 Pearson Education, Inc.
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AP Biology Reading Guide
Fred and Theresa Holtzclaw
Chapter 33: Invertebrates
27.
Caenorhabditis elegans is a model research organism and is widely studied. It is an example of a free-living nematode. Some interesting parasitic nematodes include the human parasites pinworms, hookworms, and Trichinella. How does this last parasite work? Note that its life cycle involves more than one host.
28.
What does the phylum name Arthropoda mean?
29.
The ecdysozoans are a huge group, but members have some common features. What is the body covering? What molecule is it made of?
30.
The only way an arthropod can grow is to shed its chitinous exoskeleton. What is this shedding process called?
31.
Describe the circulatory system of arthropods. Note that most molluscs have a similar type of circulatory system.
32.
Let’s focus on some specific groups. How many legs do arachnids…show more content…
What does the phylum name, Echinodermata, mean?
Copyright © 2010 Pearson Education, Inc.
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AP Biology Reading Guide
Fred and Theresa Holtzclaw
Chapter 33: Invertebrates
42.
Besides a spiny skin, echinoderms have a water vascular system with tube feet. Label the features of the water vascular system on the following sketch, and explain how the system works. 43.
As adults, many echinoderms appear to have radial symmetry, but their larval stage is bilateral. This is an important feature to note. As you read this section, what other interesting facts do you find about members of this group?
Copyright © 2010 Pearson Education, Inc.
-8-
AP Biology Reading Guide
Fred and Theresa Holtzclaw
44.
Chapter 33: Invertebrates
Let’s go back and look at phylogeny. Use the chart copied below from Chapter 32 to explain the key feature that separates each of the following groups:
“Porifera” from all other groups
Cnidaria from all other groups
Protostomes from deuterostomes (Which are the only two deuterostome groups?)
Platyhelminthes from other protostomes
Annelids and arthropods from
Dce 2 digital camera eyepiece driver for mac free. Chapter 33 Invertebrates Study Guide Answers Chapter 33: Invertebrates Chapters 31, 32, and 33 should be considered as a single unit, and you should try to put all of them together in a single conceptual framework. Due to the scope of our course, you are likely to see more AP Biology Reading Guide Chapter 33: Invertebrates Fred.
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