Question

1. both flatworms and roundworms have a body type called

radial symmetry
bilateral symmetry
segmented

Explanation:

• Radial symmetry means the body can be divided into similar halves around a central axis (like a starfish). Flatworms and roundworms do not have this.
• Segmented means the body is divided into repeated segments. Flatworms and roundworms are not segmented in the way annelids (e.g., earthworms) are.
• Bilateral symmetry means the body can be divided into two mirror - image halves along one plane. Both flatworms (Platyhelminthes) and roundworms (Nematoda) have bilateral symmetry.

Answer:

bilateral symmetry