Fishes Lab Prac. 3

Question 1

Name the parts of the larva of a lamprey, along with their name.

Answer 1

They are called Ammocoetes

See attached image for parts

Question 2

What does the image show?

Answer 2

Ammocoete larva of lamprey in cross section

Question 3

Name the parts of the Ammocete larva.

Answer 3

See image for reference

Question 4

Name the parts of the adult lamprey.

Answer 4

See image for reference

Question 5

What is the function of the papilliae around the oral disc of lampreys?

Answer 5

Sensory in nature

Question 6

What animal is shown below?

Answer 6

A pacific hagfish

Question 7

What does the image below show?

Answer 7

Placoid scales

Question 8

After looking at the image below, which kind of caudal fin do Gnathostomes have?

Answer 8

heterocercal caudal fin

Question 9

What are the ampullae of Lorenzini?

Answer 9

Sensing organs on some cartilagenous fish like sharks. Please see image for more info.

Question 10

Correctly identify the fins of a perch.

Answer 10

See image for reference

Question 11

What kind of caudal fin do perch (bony fish) (Actynopterygii) have?

Answer 11

homocercal caudal fin

Question 12

After reviewing the image below, what is the function of the lateral line?

Answer 12

Sensory, can sense changes in vibration and pressure in the water.

Question 13

Identify the atrium and ventricle of bony fish like perch.

Answer 13

See image below.

Question 14

What is the purpose of pyloric ceca in perch?

Answer 14

secrete enzymes (see image for location)

Question 15

What is the purpose of operculum in perch?

Answer 15

to protect the gills. see image for location