Section 5A

Front

What is bilateral symmetry?

Back

Bilateral symmetry is a type of symmetry where an organism can be divided into two identical halves along a single plane.

Front

What are mollusks?

Back

Mollusks are soft-bodied animals that often have a mantle, which may form a shell. Examples include snails and clams.

Front

What are echinoderms?

Back

Echinoderms are marine animals characterized by radial symmetry and tube feet. Examples include starfish and sea urchins.

Front

What is an invertebrate?

Back

An invertebrate is an animal that lacks a backbone. Most animal phyla are invertebrates.

Front

What are annelids?

Back

Annelids are segmented worms that may have setae, which are tiny hairlike structures used for movement. Examples include earthworms.

Front

Define radial symmetry.

Back

Radial symmetry is a type of symmetry where body parts are arranged around a central axis, allowing for multiple identical sections.

Front

What is the function of setae in annelids?

Back

Setae are tiny hairlike structures that help annelids move by providing traction against the substrate.

Front

Give an example of an animal with bilateral symmetry.

Back

An example of an animal with bilateral symmetry is a butterfly.

Front

What is the main characteristic of cnidarians?

Back

Cnidarians are characterized by having stinging cells called cnidocytes and include animals like jellyfish and corals.

Front

How do echinoderms move?

Back

Echinoderms move using tube feet, which operate through a water vascular system.