The organs that allow them to extract oxygen from the water.
What are gills?
100
The 2 groups are salamanders, toads and frogs.
What are the 2 major groups of amphibians?
100
The skin, kidneys, and eggs help conserve water.
What adaptations help reptiles to conserve water?
100
an animal whose body regulates it's own body temperature.
What is an endotherm?
200
A flexible rod that supports a chordates back.
What is a notochord?
200
The thin membrane stretched across bony supports. They act like a canoe paddle, and help propel the fish through the water.
What are fins?
200
1. Adult frog reproduces sexually.
2. Eggs are fertilized outside the females body.
3. Tadpole hatch from the eggs.
4.Hind legs develop.
5. Front legs develop.
6. The tail is absorbed and development is complete.
What are the steps of amphibian reproduction?
200
The adaptations are having legs under they're body and were vertebrates.
What adaptation helped the dinosaurs live before they became extinct?
200
a animal whose body doesn't produce much heat.
What is an ectotherm?
300
An animal that doesn't produce much of its own body heat.
What is an ectotherm?
300
A cartilage fish is a fish that has jaws and scales and skeletons made of cartilage.
What is a cartilage fish?
300
The 2 chambers are the atria and the ventricle.
What are the 2 heart chambers called?
300
They are large,carnivorus reptiles that care for their young.
What are characteristics of alligators and crocodiles?
300
A flexible rod that supports a chordates back.
What is a notochord?
400
An animal whose body regulates its own body temperature.
What is an endotherm?
400
A bony fish has scales,jaws,a pocket on each side of the head that holds the gills, and a skeleton made of hard bones.
What is a Bony Fish?
400
The 2 types are oxygen-rich blood and oxygen-poor blood
What are the types of blood in the body?
400
A reptile that has a covered body by a shell that includes ribs and a backbone.
What characteristics do a turtles have?
400
Their slits in the troat that all chordates have some point in their life.
What is a pharyngeal slit?
500
The slits in the throat that all chordates have some point in their life.
What is a pharyngeal slit?
500
A jaw less fish has no gills or scales.
What is a jaw less fish?
500
tadpoles are herbivores but frogs and toads are carnivores.
What are amphibians herbivores or carnivores?
500
They are reptiles that have overlapping scales on their skin.
What are characteristics of lizard s and snakes?
500
The hardened remains or other evidence of living things that existed a long time ago.