Select the one animal that has all of the amphibian traits listed above.
Green frogs have moist skin. Green frog tadpoles hatch from eggs without shells and live underwater. The adult frogs live on land near ponds and rivers. They may jump into the water to hide from predators. Western gorillas have black, gray, or brown fur. Adult males are sometimes called silverbacks because they have often have gray fur on their backs. Female western gorillas feed their offspring milk.
Amphibians are a group of animals with similar traits. The following traits can be used to identify amphibians:
They spend part of their lives in water and part on land.
They have moist skin.
They make eggs with no 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.
Amphibians have the following traits:
They spend part of their lives in water and part on land.
They have moist skin.
They make eggs with no shells.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A green 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 frog has the traits of an amphibian. A green frog is an amphibian.
A western gorilla has the following traits:
It feeds its offspring milk.
It has fur.
A western gorilla does not have all of the traits of an amphibian. A western gorilla is a mammal.