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Basic Biology Practice Test: Basics of Invertebrates
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Basic Biology Practice Test: Basics of Invertebrates
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25 Questions

1. Which of the following is found only among annelids?
2. The water vascular system of echinoderms
3. While sampling marine plankton in a lab, a student encounters large numbers of fertilized eggs. The student rears some of the eggs in the laboratory for further study and finds that the blastopore becomes the mouth. The embryo develops into a trochophore larva and eventually has a true coelom. These eggs probably belonged to a(n)
4. Which of the following is true of members of the phylum Cnidaria?
5. How many of the following can be used to distinguish a nematode worm from an annelid worm? 1.type of body cavity 2.number of muscle layers in the body wall 3.presence of segmentation 4.number of embryonic tissue layers 5.shape of worm in cross-sectional view
6. Which of the following describe(s) echinoderms?
7. A shared derived characteristic for members of the arthropod subgroup that includes spiders would be the presence of
8. What would be the most effective method of reducing the incidence of blood flukes in a human population?
9. Infection with which parasite might cause excessive elasticity in human skeletal muscles?
10. How many of the following are characteristics of at least some members of the phylum Cnidaria? 1.a gastrovascular cavity 2.a polyp stage 3.a medusa stage 4.cnidocytes 5.a pseudocoelom
11. What distinguishes complete metamorphosis from incomplete metamorphosis in insects?
12. One should expect to find the '9 + 2 pattern' of microtubules in association with the feeding apparatus of which of the following?
13. Nematode worms and annelid worms share which of the following features?
14. How many of the following can be observed in the mesohyl of various undisturbed sponges at one time or another? 1.amoebocytes 2.spicules 3.spongin 4.zygotes 5.choanocytes
15. Which clade in the phylum Cnidaria includes 'jellies' with rounded (as opposed to boxlike) medusae?
16. Which mollusc clade includes members that undergo embryonic torsion?
17. If a lung were to be found in a mollusc, where would it be located?
18. You find a small animal with eight legs crawling up your bedroom wall. Closer examination will probably reveal that this animal has
19. The larvae of many common tapeworm species that infect humans are usually found
20. The possession of two pairs of antennae is a characteristic of
21. The organ(s) of respiratory gas exchange in oligochaetes is (are)
22. A terrestrial mollusc without a shell belongs to which clade?
23. The heartworms that can accumulate within the hearts of dogs and other mammals have a pseudocoelom, an alimentary canal, and an outer covering that is occasionally shed. To which phylum does the heartworm belong?
24. Among the invertebrate phyla, phylum Arthropoda is unique in possessing members that have
25. Which of the following combinations of phylum and description is incorrect?

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