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

Chordata, Vertebrata, Agnatha Questions

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

2. The sea lamprey is a jawless fish. How is the outside covering 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 this different 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 invertebrate chordates share with jawless fish. What structure have the jawless fish evolved that the invertebrate chordates have not?

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

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

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

Expert Solution

gladiator answered 1 year ago

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