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Chordata, Vertebrata, Agnatha Questions 1. Read the descriptions provided above for the external structures and then label...

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Biology

Chordata, Vertebrata, Agnatha Questions

1. Read the descriptions provided above for the externalstructures and then label the lamprey diagram below.

2. The sea lamprey is a jawless fish. How is the outsidecovering of the lamprey different than that of other fish?

3. How many gill openings do they have?

4. Describe the purpose of the fins labeled 8 and 9. How is thisdifferent than the function of the fin labeled 10?

5. Could a sea lamprey bite you? Explain your answer.

6. What exits the body of the lamprey through the cloaca?

7. Name the four basic characteristics that invertebratechordates share with jawless fish. What structure have the jawlessfish evolved that the invertebrate chordates have not?

8. How is the mouth of the lamprey adapted to prey on otherfish?

9. What is the function of the notochord? What replaces thenotochord in vertebrates?

10. Do lampreys have any economic value (good or bad)?

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