University:
California State University, Northridge
Course:
BIOL 313/L | Invertebrate Zoology and Lab
Academic year:

2022
Views:

301

Pages:

1
Author:

Charlee Buchanan

Chapter 33 Invertebrates (10 points) Name ______________ 1. All animal phyla have some marine species. What does this tell us about the evolution and origin of metazoans? 2. Porifera don’t seem much like the rest of the animals. They are sessile and don’t have tissues. Why are they considered animals? 3. The Cnidaria are all carnivorous, even though many are sessile. How do they catch and eat prey? 4. Why are Acoels of extreme interest to evolutionary biologists? 5. The mollusks have two evolutionary innovations which allowed them to grow large, and not rely on diffusion through the epidermis for gas exchange, as in the flatworms. What are these two innovations? 6. What is a lophophore, and which phyla contain animals with this structure? 7. You find an arthropod crawling in your house. What trait will you look at to determine whether it is an insect or an arachnid? 8. Some people won’t eat lobster because they say it’s like eating a giant bug. How are they right, and how are they wrong? 9. Echinodermata is the closest phylum to our own, Chordata. What traits do we have in common with Echinoderms? 10. Which phyla in the Big Nine contain species that are human parasites?

Chapter 33 Invertebrates Test

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