This is the meaning of amphibian
What is "double life"?
95% of fish belong to his group
What are bony fish?
This reptile has no legs
What is a snake?
An animal having an internal body temperature that changes with the temperature of its surroundings
What is ectothermic?
Structure in fish that exchange gases.
What are gills?
This is where amphibians breed and reproduce.
What is in the water?
These are the three groups of fish
Jawless, Cartiligenous, and Bony fish.
This describes the scales of reptiles
What are dry scales?
Internal framework of a vertebrate
What is an endoskeleton?
2 chambered heart
What is a fish?
Amphibians are sensitive to pollution making them this.
What is a biological indicator?
This is the air sac that allows fish to adjust their density
What is a swim bladder?
Most reptiles have a heart with this many chambers
What is 3?
A word to describe deep rest in the winter
A few chordates are also this
What are invertebrates?
What is smooth and moist?
These are examples of a jawless fish and a cartilaginous fish.
What are lampreys and hagfish and sharks, skates, and rays?
This reptile has rough, scaly skin, clawed toes on four legs, movable eyelids, and external ears.
What is a lizard?
What is estivation?
Sense organs on a fish's side
What is a lateral line?
These are 2 changes that a frog will go through as they change from tadpoles to adults
What is - gills to lungs, and lose tail and gain legs?
These fish are thought to be mostly extinct
What are lobed finned fish?
This is the difference between crocodiles and alligators.
What are crocs have narrow V-shaped heads and alligators have broad U-shaped heads?
An animal that has a notochord, nerve cord, pharyngeal pouches, and a postanal tail present at some stage in its development
What is a chordate?
The type of egg that provides a complete environment for the developing embryo
What is an amniotic egg?