Vertebrates
Fish
Amphibians
100
An animal that has a backbone
What is a vertebrate?
100
Water dwelling vertebrates that are characterized by scales, fins, and throats with gill slits.
What are fish?
100
Vertebrates that are fishlike and that breathe through gills when immature.
What are amphibians?
200
All vertebrates belong to this phylum.
What is Chordata?
200
Feathery structures through which water dwelling animals breathe.
What are gills?
200
Adult amphibians must have these to breathe on land.
What are lungs and moist skin?
300
Contains these things at some stage in life: a notocord, postanal tail, nerve cord, and pharyngeal pouches.
What is a chordate?
300
Where the blood is contained within blood vessels. All vertebrates have this.
What is a closed-circulatory system?
300
Adult amphibians contain this system for transporting blood.
What is a double-loop circulatory system?
400
Provides support and helps to give shape to the body of a vertebrate.
What is an endoskeleton?
400
The process in which a sperm joins with an egg outside the body.
What is external fertilization?
400
The series of dramatic changes in body form in an amphibian's life cycle.
What is metamorphosis?
500
Six out of eight groups of vertebrates are called this, otherwise known as cold-blooded.
What is an ectotherm?
500
Only bony fish contain this structure that allows them to float at different levels in the water.
What is a swim bladder?
500
Frogs use a muddy lake floor, toads use dry ground below the frost line for this.
What is hibernation?
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