invertebrates

Question 1

vertebrate

Answer 1

an animal that has a backbone

Question 2

endotherm

Answer 2

an animal that can use body heat from chemical reactions in the body’s cells to maintain a constant body temperature

Question 3

ectotherm

Answer 3

an organism that needs sources of heat outside of itself

Question 4

lateral line

Answer 4

a faint line visible on both sides of a fish’s body that runs the length of the body and marks the location of sense organs that detect vibrations in the water

Question 5

gill

Answer 5

a respiratory organ in which oxygen from the water is exchanged with carbon from the blood

Question 6

jawless fishes

Answer 6

Agnatha is an infraphylum of jawless fish in the phylum Chordata, subphylum Vertebrata, consisting of both present and extinct species. Among recent animals examples hagfish and lampreys

Question 7

Cartilaginous fishes

Answer 7

Chondrichthyes is a class that contains the cartilaginous fishes that have skeletons primarily composed of cartilage. They can be contrasted with the Osteichthyes or bony fishes examples stingrays,chimera and sharks

Question 8

Bony fishes

Answer 8

Osteichthyes, popularly referred to as the bony fish, is a diverse taxonomic group of fish that have skeletons primarily composed of bone tissue. examples rat finned fish,catfish and sturgeons

Question 9

swim bladder

Answer 9

a gas filled sac that is used to control buoyancy also known as a gas bladder