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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