Fish Anatomy Exam

The jawless hagfish belongs to the class Agnatha.

• True

• False

Fish do NOT have swim bladders, a structure that allows for equalizing buoyancy in water.

• True

• False

A fish heart has two chambers.

• True

• False

Chondrichthyes means “without jaws”.

• True

• False

How much oxygen is available to fish in the water and how much oxygen can fish take out of the water?

• 1% and 90%

• 21% and 90%

• 21% and 50%

• 1% and 50%

Tags

NGSS.MS-LS2-1

Which zone allows for “good color vision” because it is located near the top of the water?

• Midnight zone

• Twilight zone

• Sunlight zone

• Both A and C

Fish that feed on food that is above them have what type of mouth position?

• Superior

• Terminal

• Inferior Sub-Terminal

• None of the above

What part of the fish protects AND covers the gills?

• Pectoral Fin

• Operculum

• Mouth

• Gill filaments

Tags

NGSS.MS-LS4-2

Flat blunt teeth are good for:

• Crushing shells

• Swallowing food whole

• Eating meat

• Filtering tiny organisms

What muscle type is considered a “fast muscle” and is good for “quick bursts of movement”?

Answer explanation

white muscles are considered the fast muscle since they are used for burst swimming. However, white muscles can only sustain this movement for a short period of time because it consumes huge amount of energy.