Select the one animal that has all of the segmented worm traits listed above.
Earthworms live in soil and have no limbs. Their bodies are soft, cylindrical, and made up of many segments. Blue crabs are omnivores. Omnivores are animals that are adapted to eat both plants and animals. Blue crabs have an exoskeleton and two pairs of antennae.
Segmented worms are a group of animals with similar traits. The following traits can be used to identify segmented worms:
They have a soft, cylindrical body.
They have no limbs.
They are made up of segments. 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.
Segmented worms have the following traits:
They have a soft, cylindrical body.
They have no limbs.
They are made up of segments.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A blue crab has the following traits:
It has two pairs of antennae.
It has an exoskeleton.
A blue crab does not have all of the traits of a segmented worm. A blue crab is a crustacean.
An earthworm has the following traits:
It has a soft, cylindrical body.
It has no limbs.
It is made up of segments.
An earthworm has the traits of a segmented worm. An earthworm is a segmented worm.