fish

Question 1

vertebrate

Answer 1

animal of large group with a back bone or spinal column

Question 2

vertebral column

Answer 2

spine: back bone

Question 3

neural crest

Answer 3

fourth germ layer of the vertebral column

Question 4

closed circulatory system

Answer 4

blood is closed at all times inside of blood vessels, pumped by heart and doesnt normally fill body cavities

Question 5

cycloid scaled

Answer 5

salmon and carp it is thin shows concentric lines of grownth

Question 6

placoid scales

Answer 6

sharks and rays also called dermal denticals, structuarally homologous with vertebrete teeth

Question 7

ganoid scales

Answer 7

sturgeons and gars contains an inner layer of bone

Question 8

gills

Answer 8

paired resperatory organ of fish, oxygen is extracted from water that flows over them

Question 9

lateral line

Answer 9

system of sense organs , detects movement and vibration

Question 10

spawining

Answer 10

multiple eggs being fertalized, spawn, offspring

Question 11

jawless fish

Answer 11

any taxonomic group (agnatha) containing vertabrates without jaws.

Question 12

cartilaginous fish

Answer 12

having a skeleton made of cartalidge rather than bone ex: rays shark, chemeras.

Question 13

bony fish

Answer 13

a skeleton of bone not cartalidge (most fish)

Question 14

lobe-finned fish

Answer 14

largely extinct group having fleshy lobed fins probable ancestors of amphibians