stupid marine fish stuff lmao jk love marion bio

Question 1

fish evolved from

Answer 1

invertebrate

chordate

Question 2

characteristics of vertebrates

Answer 2

1. Have a backbone (vertebral column or spine)
2. Dorsal Hollow Nerve Cord (spinal cord)
3. Notochord
4. Post-anal tail
5. Bilateral symmetry
6. Presence of an endoskeleton

Question 3

three types of fishes

Answer 3

• Jawless Fish
• Cartilaginous Fishes
• Bony Fishes

Question 4

what class are jawless fish

Answer 4

agatha

Question 5

jawless fish

Answer 5

• –lack jaws
• –Feed by suction with the aid of a round, muscular mouth and rows of teeth
• –body is long and cylinder
• – lack paired fins and body scales

Question 6

Jawless Fish example (hagfish)

Answer 6

• Feed on dead or dying fishes
• Skin is used to manufacture
leather goods
• Attack bait or fishes on fishing
lines, nets and traps

Question 7

Jawless Fish example (lamprey)

Answer 7

• Found in temperate regions
• Freshwater fishes
• Breed in rivers and lakes, but
some move to the seas as adults
• Attach to other fishes and suck
their blood

Question 8

cartilage fishy class

Answer 8

CHONDRICHTHYES

Question 9

cartilage fishy class

Answer 9

• Movable jaws
• Well-developed teeth
• Mouth is almost always ventral
• Paired lateral fins for efficient swimming

Question 10

shark scales

Answer 10

•Rough, sandpaper-like skin
because of the presence of tiny
placoid scales

Question 11

shark body shape

Answer 11

Fusiform body

Question 12

shark tail

Answer 12

Caudal fin or tail is

well developed

Question 13

Heterocercal tail

Answer 13

upper lobe is longer than the lower lobe

Question 14

how many gill slits does a shark have

Answer 14

5 to 7 gill slits

Question 15

random shark info

Answer 15

• Shark meat is eaten around the
world
• Subject to disastrous fishing
• Fished for their oil
• Skin is turned into leather
• Skin also used as sandpaper
• Fins are used for soup