Animals with bilateral symmetry have streamlined bodies. Which animal below has a streamlined body shape?

Your friend says that spiders have a skeleton inside their bodies. Is your friend correct?

Ribs are important because they protect

True or false: Vertebrates are usually smaller than invertebrates.

Select all the invertebrate groups below

Which animals below can keep a constant body temperature, even when the outside temperature changes?

All of these animals are chordates because they have a nerve cord, gill slits, and ________

A skeleton is on the outside of the body is called an _________.

This frog lives in Alaska. He moves very slowly when he is cold because

The backbone is made of a stack of bones called

Name the animal based on the skeleton.

All chordates have similar structures when they are born because

Choose the correct answer. Which type of animals eat more food?

A gorilla is grouped with mammals because