Skeletons Inside & Out - The Glossary

Cold blooded animals that have a spine and that live on land and in water are called _______.

• amphibians

• reptiles

• birds

• fish

A strong, flexible tissue that can form a skeleton or connects parts of the skeleton is called _________. Sharks have this.

• exoskeleton

• endoskeleton

• cartilage

• bones

A ________ is an animal that has a hard outer shell and that usually lives in water.

• fish

• mammal

• reptile

• crustacean

True or False: An endo skeleton is found inside the skin, while an exoskeleton is a hard, outer covering.

• True

• False

When an animal is no longer in existence, this means the animal is ______________.

• extinct

• endangered

• alive

• in a zoo

True or False: A joint is any place where two bones come together.

• True

• False

Which of the following types of animals have warm blood, a spine, fur or hair, and produce milk for their babies?

• reptiles

• mammals

• fish

• birds

When a tadpole changes into a frog, it goes through a _______________.

• egg stage

• metamorphosis

• a pond

• molting

This part of the body protects the brain.

• spine

• skull

• vertebrae

• sternum

This part of the body is the backbone.

• spine

• skull

• vertebrae

• sternum