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