What type of fish are hagfish and lamprey?
Jawless
frogs, salamander (toads)
Name three examples of reptiles.
lizards, turtles, and snakes (Could also include tortoises, crocodiles, and alligators)
What is the structures that in most vertebrates hardens to become the backbone?
Notochord
The majority of fish are covered in what type of skin?
Scales
An amphibian's skin to react easily to -------
pollutants or toxins
What features are in reptile eggs to keep them moist inside?
Shell and membranes
All vertebrates have an internal skeleton.
False
What structure absorbs oxygen from the water for breathing?
Gills
What is the stage called when they spend part of their life in water?
Larval
What is found on the skin of reptiles?
Scales
Are vertebrates endotherms or ectotherms?
External
What is the step before frogs grow front legs and heir tail shortens?
Grow hind legs
What is the difference between crocodiles and alligators
Snout shape
Besides a notochord, vertebrates also have what cord?
Nerve
The three categories of fish.
Jawless, Bony, and Cartilaginous
What is it called when an amphibian changes from one form to a different form during its life cycle.
Metamorphosis
Are reptiles considered aquatic or terrestrial?
Terrestrial
Another word for gill slits is ---------- slits.
Pharyngeal