Perch Dissection Quiz

What is a function of the operculum?

Answer explanation

The operculum is a bony flap that covers and protects the gills. It opens and closes to help move water from the throat, across the gills and then out of the operculum.

What is a function of the lateral line?

Answer explanation

The lateral line is a specialized sensory structure for detecting pressure changes/movement. Example: vibration of waves from movement of prey.

Tags

NGSS.MS-LS4-2

What feature is used to determine the gender of the perch in this video?

Answer explanation

The presence of either 2 testes=male, presence of 1 ovary=female.

What is the function of the liver?

Answer explanation

The liver is designed to detoxify the blood and produces bile for fat digestion.

Tags

NGSS.MS-LS1-3

NGSS.MS-LS1-7

What is the function of the swim bladder?

Answer explanation

The swim bladder is almost translucent, smooth and shiny! It's large, adjustable air-filled sac-like structure that changes the density of the bony fish resulting in increased buoyancy. This quality is not found with the sharks.

Tags

NGSS.MS-LS4-4

Distinguishing characteristics of the perch (fish) includes

• Fins

• Has a backbone

• Book lungs

• A and B Only

What do fins do for the fish?

• Propulsion

• directional movement

• stabilization

• All of the above.

What is the function of the caudal fin?

Answer explanation

The caudal fin is responsible for movement forward (propulsion)