Evolution and Characteristics of Cartilaginous Fish Quiz

What is the endoskeleton of cartilaginous fish made of?

cartilage

Where is the spiracle found in most species of cartilaginous fish?

behind each eye

What is the unique form of reproduction in sharks almost similar to?

mammalian

What special organ do cartilaginous fish use for detection of electric fields?

ampullae of Lorenzini Signup and view all the answers

What is the purpose of the oil in the liver of cartilaginous fish?

buoyancy Signup and view all the answers

What are the three reproductive methods of chondrichthyes?

oviparous, ovoviviparous, viviparous Signup and view all the answers

What unique feeding adaptation do chondrichthyes have in relation to their teeth?

They replace their teeth periodically Signup and view all the answers

What is the purpose of the liver of larger sharks and rays?

Buoyancy and lifting Signup and view all the answers

Name two filter feeders among larger sharks and rays.

Whale shark, manta ray Signup and view all the answers

What is the technique used by many marine animals, including rays and skates, for protection and predation?

Countershading Signup and view all the answers

What are the three different kinds of bony fish scales?

Cycloid, ganoid, ctenoid Signup and view all the answers

What substance covers ganoid scales, and what are their characteristics?

Ganoin; diamond-shaped, thick, non-overlapping Signup and view all the answers

What is the purpose of the swim bladder in most fish?

Adjust buoyancy through manipulation of gases Signup and view all the answers

What are the components of the skeletal system in bony fish?

Vertebral column, jaw, ribs, intramuscular bones, fins supported by rays Signup and view all the answers

How do fish breathe and absorb oxygen through their respiratory system?

Water enters gill chamber through the mouth, blood in gill filaments absorbs oxygen, water exits through gill openings under the operculum Signup and view all the answers

What type of body shape do most bony fish have, and what is the advantage of this shape?

Fusiform body shape; reduces drag and requires minimum energy to swim Signup and view all the answers

What are chromatophores, and what is their role in fish pigmentation?

Cells containing pigment; responsible for fish coloration Signup and view all the answers

What type of camouflage is commonly observed in most species of fish, and what does it involve?

Countershading; dorsal side darker than ventral side Signup and view all the answers

What is bioluminescence, and how is it produced in some marine species of bony fish?

Production of light through chemical reaction; marine species of bony fish Signup and view all the answers

What are the two main categories of fins found in bony fish, and what are their primary functions?

Paired fins (pectoral and pelvic) and median fins (dorsal, caudal, and anal); responsible for swimming, stability, and direction changes Signup and view all the answers