What parts of their bodies do fish use to move swim in the water?
Fins
What do we call a frog in the early stage of metamorphosis when it still lives in the water?
tadpole
Reptile eggs have a hard porous covering that stops the embryo from drying out. This is called_______
amniotic eggs
Their bodies are covered in ______________.
feathers
What is the function of the mammary glands in mammals?
produce milk
Fish have protective _________ covering their bodies.
scales
Amphibians are called____________ because they have four legs
tetrapods
Their internal body temperature depends on the temperature of their environment. This makes them ________________.
ectothermic
The mandible they use to eat food is the _________.

beak
Most mammals are viviparous. What does this mean?
The young develop inside the mother and obtain nutrients from her blood.
What is the name of the unique sensory organ in fish? It is a line that runs down the side of the body.
Lateral line
How do amphibians obtain oxygen through cutaneous respiration?
through the skin
__________________ don't have any teeth. They have a shell that covers their body.
Chelonians (turtles and tortoises)
Birds are _______________. They must maintain their internal body temperature regardless of the temperature of their environment.
endothermic
The bodies of mammals are covered with______ which allows them to maintain body temperature and provides camouflage
hair
What is the the name of the external body part that covers the gills?
operculum
_____________ have a short body without a tail. Their back legs are longer than the front legs, which allows them to jump long distances.
Anurans. (frogs and toads)
_______________ are large predators that have powerful jaws with strong teeth.
Crocodilians (crocodiles and alligators)
Birds do not have teeth-- in the stomach, a muscular area called the _________________ helps to grind food
gizzard
_______________ give birth to their young at a very early stage of development.

marsupials
What are the two main types of fish?
Bony fish
Cartilaginous fish
_______________ have a long body with a tail. Their four legs are short and all the same length.
Urodeles (newts and salamanders)
_______________ have a forked tongue and regularly change their skin.
How do birds maintain their eggs at the right temperature?
Incubation
In most mammals, the embryo is connected to the mother by an organ called the ______________.
placenta