Support Systems
Animals with a backbone
What are vertebrates?
All animals react to these
What are changes in their environment?
The two main reasons animals move
What are to get food and escape danger?
All animals, no matter where they live, need these three things
What are food, water, and oxygen?
The type of skeleton made of fluid and surrounded by muscles
What is a hydrostatic skeleton?
The system that helps animals move, find food, and stay safe
What is the nervous system?
A wavelike motion used by animals without legs
What is undulation?
Structures that help animals survive in different habitats have this type of function
What are similar functions?
These animals must shed their exoskeletons as they grow
What are invertebrates like crabs and snails?
A netlike control system found in animals with radial symmetry
What is a nerve net?
Animals in water often use these body parts to swim
What are fins and tails?
Animals have different structures for support, control, and this
What is movement?
The function of the endoskeleton
What is to protect internal organs and provide support?
Animals with bilateral symmetry usually have this major structure
What is a brain or brainlike structure?
Animals on land commonly move by doing this
What is walking or jumping?
These hard coverings provide protection and support to many invertebrates
What are exoskeletons?
The only animals with both an endoskeleton and an exoskeleton
What are turtles and tortoises?
In vertebrates, the nerve cord is also called this
What is the spinal cord?
These three types of animals fly using wings, not just gliding
What are birds, bats, and some insects?
A coelom is found inside this type of skeleton
What is a hydrostatic skeleton?