class agnatha

Question 1

common name and examples

Answer 1

jawless fish
- hagfish
- lampreys

Question 2

describe their body

Answer 2

• cylindrical, streamlined, up to a meter long
• lack appendages

Question 3

describe their skeleton

Answer 3

cartilaginous skeleton (no true bone)

Question 4

describe sensory organs

Answer 4

• lateral line detects vibration
• light sensitive eyes

Question 5

how they feed?

Answer 5

• parasites on game fish, attach with teeth on tongue
• hagfish: scavengers

Question 6

how they breath

Answer 6

gills

Question 7

how they reproduce

Answer 7

• external fert
• have both ovaries and testes, only 1 functional