Invertebrates: Sponges to Worms

Front

What is bilateral symmetry?

Back

Bilateral symmetry is a type of symmetry where an organism can be divided down the middle into two identical halves.

Front

What are setae?

Back

Setae are hairlike structures that segmented worms use to move.

Front

What are invertebrates?

Back

Invertebrates are animals that do not have a backbone.

Front

What is radial symmetry?

Back

Radial symmetry is a type of symmetry where body parts are arranged around a central axis, allowing the organism to be divided into similar halves in multiple ways.

Front

What are sponges?

Back

Sponges are simple aquatic animals that have pores on the outside of their bodies and gather food from water pumped through their bodies.

Front

Give an example of an invertebrate.

Back

An example of an invertebrate is a jellyfish.

Front

What is the main characteristic of segmented worms?

Back

Segmented worms have bodies divided into segments, which allows for greater flexibility and movement.

Front

What is the role of pores in sponges?

Back

Pores in sponges allow water to flow in, helping them filter food and oxygen from the water.

Front

Name a type of invertebrate that has a hard outer shell.

Back

Mollusks, such as snails and clams, have a hard outer shell.

Front

What is the difference between free-living and parasitic worms?

Back

Free-living worms live independently in their environment, while parasitic worms live on or inside a host organism.