Biology of Fishes

Which of these species listed below is NOT a cartilaginous fish?

• bull shark

• goldfish

• lamprey

• shovel-nosed ray

Which of these species listed below is NOT a bony fish?

• bull shark

• goldfish

• salmon

• garibaldi

Which is the correct path that food takes in fish digestion?

• esophagus, pharynx, stomach

• stomach, esophagus, pharynx

• pharynx, esophagus, stomach

The fish stomach is usually ____-shaped.

• L

• Y

• J

• S

What is the purpose of a spiral valve in the intestines of cartilaginous fish?

• decrease surface area

• increase surface area

• change the shape

• speed up digestion

Fish hearts have _____ chambers

• 2

• 4

• 6

• 1

Which path below is the correct path of deoxygenated blood in a fish circulatory system?

• body, 2nd chamber, gills, 1st chamber

• gills, 1st chamber, 2nd chamber, body

• body, 1st chamber, gills, 2nd chamber

• body, 1st chamber, 2nd chamber, gills

The first pair of gill slits in cartilaginous fish are called _______.

• spiral valve

• cuticles

• spiracles

• pyloric caeca

What is the function of spiracles?

• release salts

• take in water when the mouth can't

• release carbon dioxide

• take in salts

In bony fish, the gills are covered by an _____________.

• gill arches

• operculum

• gill filaments

• spiracles