Select the one animal that has all of the reptile traits listed above.
American green tree frogs have moist, smooth skin and lay eggs with no shells. They live underwater for the first part of their lives. As adults, they live on land near ponds or swamps. Adult male American green tree frogs have a loud mating call. Cobras hatch from eggs with shells. They have a wide, flat hood. A cobra can display its hood to scare away a predator. Like the rest of its body, the hood is covered in waterproof scales.
Reptiles are a group of animals with similar traits. The following traits can be used to identify reptiles:
They have scaly, waterproof skin.
They make eggs with shells. Observe the animals and read the descriptions.
Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live.
How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, scientists compare the animal's traits to other animals' traits. Scientists classify animals with similar traits into a group.
To decide if an animal is part of a group, look at the traits of the group.
Reptiles have the following traits:
They have scaly, waterproof skin.
They make eggs with shells.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A green tree frog has the following traits:
It spends part of its life in water and part on land.
It has moist skin.
It makes eggs with no shells.
A green tree frog does not have all of the traits of a reptile. A green tree frog is an amphibian.
A cobra has the following traits:
It has scaly, waterproof skin.
It makes eggs with shells.
A cobra has the traits of a reptile. A cobra is a reptile.