Fish Scales Quiz

What is the primary function of fish scales?

• To assist in digestion

• To aid in swimming speed

• To provide buoyancy

• To protect the fish's body

Which type of scales are typical of cartilaginous fish?

• Placoid scales

• Ctenoid scales

• Cycloid scales

• Ganoid scales

What characteristic is used to determine a fish's age?

• The color of the scales

• The size of the fish

• The growth rings on the scales

• The number of fins

Which fish is known to have cycloid scales?

• Blue Shark

• Perch

• Sturgeon

• Red Snapper

What happens to fish scales after a lesion?

• They regenerate and differ from the originals

• They change color

• They fall off completely

• They become thicker

What type of scales do sturgeons have?

• Placoid scales

• Cycloid scales

• Ctenoid scales

• Ganoid scales

What is the composition of placoid scales similar to?

• Cartilage

• Teeth

• Skin

• Bone

Which type of scales are described as overlapping like tiles?

• Placoid scales

• Ctenoid scales

• Cycloid scales

• Ganoid scales

What is the outer covering of ganoid scales made of?

• Ganoin

• Pulp

• Enamel

• Dentine

How are scales arranged on most fish?

• In vertical lines

• In circular patterns

• In rows that slant diagonally

• In random placements