Show:
Vertebrates
Fish
Amphibians
Reptiles
Reptile types
100
All vertibrates, lancelets and tunicates belong to this phylum.
What is Chordata?
100
Fanlike structures that help the fish move, steer, stop and balance, AND bony structures that cover the skin of bony fishes.
What fins and scales?
100
A sac like organ that takes in oxygen from the air and delivers it to the blood.
What are lungs?
100
A group of mammal-like reptiles that some scientists believe are the ancestors of mammals.
What are Therapsids?
100
These reptiles all have an armor-like shell.
What are turtles and tortoises?
200
Segments of bone or cartilage that interlock to form a backbone.
What is vertebrae?
200
A row or rows of tiny sense organs along the sides of a fish's body.
What is a lateral line system?
200
The aquatic larvae of an amphibian.
What is a tadpole?
200
An egg containing amniotic fluid to protect the developing embryo; usually surrounded by a hard shell.
What is an amniotic egg?
200
These reptiles are all carnivores and spend most of their time in the water.
What are crocodiles and alligators?
300
An animal that maintains a constant body temperature.
What is an endotherm?
300
Organs that remove oxygen from the water and carbon dioxide from the blood.
What are gills?
300
The process in which an insect or other animal changes form as it develops from an embryo or larvae to an adult.
What is metamorphosis?
300
This protects the egg from damage and keeps the egg from drying out.
What is the shell?
300
There are about 4000 known species of this four legged reptile that lives in deserts, forests, grasslands and jungles.
What are lizards?
400
An animal whose body temperature fluctuates with the environment.
What is an ectotherm?
400
Small, sharp, tooth-like structures that on the skin of cartilaginous fishes.
What are denticles?
400
These amphibians do not have legs and are shaped like worms or snakes.
What are caecilians?
400
This provides water and protein to the embryo.
What is the albumen?
400
There are about 1,600 known species of this reptile that has no legs and swallow their prey whole.
What are snakes?
500
The four special characteristics of all chordates.
What are a notochord, a hollow nerve cord, pharyngeal pouches, and a tail.
500
A balloon like organ that is filled with oxygen and other gases; gives bony fish their buoyancy.
What is a swim bladder?
500
These modern amphibians are most like prehistoric amphibians, with most species living under stones and logs in the damp woods or North America.
What are salamanders?
500
This is filled with fluid that surrounds the embryo and protects it from injury.
What is the amniotic sac?
500
The largest lizard that is 3m long, 140kg and lives in Indonesia.
What is the komodo dragon?