Final Exam Review Aquatic Science

Identify this type of fin.

• Rounded

• Forked

• Lunate

• Indented

Identify this type of fin.

• Rounded

• Forked

• Lunate

• Truncate

Tags

NGSS.MS-LS4-2

Identify fish pictured to the right using the dichotomous key.

1. A. Is snake-shaped ….Sea lamprey 

1. B. Is shaped like a fish… go to 2 

2. A. Has barbels …. Channel catfish 

2. B. Does not have barbels… go to 3 

3. A. Has one dorsal fin… go to 4 

3. B. Has two dorsal fins… go to 8 

4. A. Has a small fin behind dorsal fin… go to 5 

4. B. Does not have a small fin behind dorsal fin… go to 6 

5. A. Has a forked caudal fin…. Trout-perch 

5. B. Does not have a forked caudal fin…. Steelhead trout

• Sea lamprey

• Channel catfish

• Trout-perch

• Steelhead trout

Identify this fish scale that is typically found on bony fish.

• Ganoid

• Placoid

• Cycloid

• Ctenoid

Identify this type of fish scale that is typically found on sharks and rays.

• Placoid

• Ctenoid

• Cycloid

• Ganoid

Identify the following external body structures. Match the letter to the name of the body part.

Lateral Line -

Identify the following external body structures. Match the letter to the name of the body part.

Dorsal Fin

Identify the following external body structures. Match the letter to the name of the body part.

Caudal Fin

Identify the following external body structures. Match the letter to the name of the body part.

Pectoral Fin

Which of the following is the difference between seals and sea lions?

• Seals are mammals and sea lions are not

• Sea lions have external ear flaps and seals do not

• Sea lions have fur and seals do not

• They are the same and have no differences

Tags

NGSS.MS-LS4-2