Practice Quiz Fish

Class Agnatha Hagfish

Hagfish feed on dead or dying fishes

Class Agnatha Lamprey

Lampreys attach to other fishes and suck their blood.

Note the oral disc with horny teeth that can act as a rasp to cut a holein the fish they attach themselves to.

1. Mouth

2. Liver

3. Spiral Valve

4. Cloaca

5. Opening of cloaca

6. Rectal gland

What is the function of #6? Salt secretion

Chondrichthyes

Placoid scales

Sharks have placoid scales

Cycloid Ctenoid

What is the function of this sensory system?

The drawing shows the lateral line system of a shark. Boneyfishes also have a lateral line system. The lateral line system allows the animal to detect shock waves in water just like your eardrum responds to shock waves in air. This allows the animalto detect movement in the water column such a swimmer kicking in the water .

1. Pectoral fin

2. Pelvic fin

3. Lateral line

4. Anal fin

5. Caudal fin

6. Posterior dorsal fin

7. Anterior dorsal fin

8. Operculum

Kingdom? Phylum? Subphylum? Class?

Common name? Ratfish

Animalia Chordata Vertebrata Chondrichthyes

This shark has aheterocercal tail.

1. Rostrum

2. Mouth (Sharks have a ventral mouth)

3. External gill slits

4. Pectoral fin (Notice it is large and “wing-like”.)

5. Pelvic fin

6. Clasper (The presence of a clasper makes this shark a male)

7. Caudal fin (Heterocercal tai)

8. Posterior dorsal fin

9. Anterior dorsal fin

10. Lateral line

11. Spiracle (a modified gill slit)

1. Gill Arch

2. Gill Raker

The holes are openings of sensory structures called Amullae of Lorenzini.These sensory structures allow the shark to detect minute electrical currents.

1. Gill Arch

2. Gill Raker

3. Gill Arches

Heterocercal

Swim bladder

Homocercal

This fish is a whale shark. It is the largest living fish.

How does this animal feed? Whale sharks are filter feeders that feed on plankton.

ChordataAnimalia Osteichthyes

Parrot fish

1. Stomach2. Pyloric caeca3. Intestine4. Esophagus5. Stomach6. Intestine7. Pyloric caeca

1. Heart2. Vein

4. Artery

3. Capillary bed (the site of gas exchange) This is where oxygen leaves the blood and enters the tissues