True/False Indicate whether the sentence or statement is true or false. |
| 1. | Different regions of an annelid’s body specialize for different functions. |
| 2. | Some leeches have become specialized to a parasitic way of life by developing the ability to suck blood from the bodies of other organisms. |
Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. |
| 3. | Twisting of the visceral mass of gastropods is called a. | extension. | c. | torsion. | b. | inversion. | d. | conversion. | | | | |
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| 4. | Among the various species of gastropods, respiration may take place a. | with gills. | c. | with lungs. | b. | through the skin. | d. | All of the above | | | | |
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| 5. | Segmented worms are known as a. | nematodes. | c. | planarians. | b. | annelids. | d. | arthropods. | | | | |
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| 6. | Each segment of an annelid a. | is capable of reproduction. | b. | has a well-developed brain. | c. | has a pseudocoelom. | d. | has a complete set of digestive organs. | | |
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| 7. | The evolution of tremendous diversity in the phylum Annelida is due primarily to a. | gills. | c. | cephalization. | b. | specialized reproductive organs. | d. | segmented bodies. | | | | |
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| 8. | A similarity between annelids and arthropods is that they both have a. | exoskeletons made of chitin. | c. | segmented body patterns. | b. | the ability to fly. | d. | well-developed lungs for respiration. | | | | |
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| 9. | Segmented worms are known as a. | nematodes. | c. | planarians. | b. | annelids. | d. | arthropods. | | | | |
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| 10. | Refer to the illustration above. Which two organisms in the diagrams have segmented body plans? a. | Organisms “A” and “C” | c. | Organisms “A” and “D” | b. | Organisms “B” and “D” | d. | Organisms “B” and “C” | | | | |
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| 11. | Coordinated movements of an annelid’s body segments are possible because of the a. | development of an advanced brain. | b. | ventral nerve cord and paired segmental ganglia. | c. | presence of a true coelom in the annelid body. | d. | existence of a complete digestive system. | | |
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| 12. | Of the four basic types of tissue, the tissue that is specialized to transmit and receive messages in the body is a. | epithelial tissue. | c. | muscle tissue. | b. | connective tissue. | d. | nerve tissue. | | | | |
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| 13. | earthworm movement : circular muscles and setae :: a. | earthworm digestion : circular muscles and setae | b. | earthworm digestion : sperm receptacles | c. | earthworm reproduction : pharynx | d. | earthworm respiration : skin | | |
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| 14. | The digestive tube of annelids is divided into three regions. Which of the following is not among these regions? a. | crop | c. | radula | b. | intestine | d. | stomach | | | | |
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| 15. | The advantage of a closed circulatory system over an open circulatory system is that a. | blood moves more efficiently through the tubes of a closed circulatory system. | b. | a closed circulatory system prevents blood from leaking out of the body. | c. | blood is able to be pumped by a muscular heart in a closed circulatory system. | d. | lungs are able to function in animals with a closed circulatory system. | | |
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| 16. | Of the following organs, the one that does not exist in annelids is the a. | heart. | c. | nephridia. | b. | gills. | d. | stomach. | | | | |
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| 17. | The clitellum of an earthworm a. | contains the heart. | b. | is associated with reproduction. | c. | acts as a primitive respiratory system. | d. | is necessary for movement. | | |
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| 18. | Earthworms are considered to be beneficial to the environment because a. | their castings contain nutrients. | b. | they aerate the soil as they move through it. | c. | they break up the soil in which they live. | d. | All of the above | | |
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| 19. | The basic body plan of an annelid a. | consists of joined legs. | c. | is a tube within a tube. | b. | is similar to a long tube. | d. | can be compared to a corkscrew. | | | | |
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| 20. | Parapodia are involved in all of the following except a. | swimming. | c. | burrowing. | b. | gas exchange. | d. | reproduction. | | | | |
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