Question

organisms in the phylum annelida have a subdivided body plan with repeated parts that allows for flexibility for moving in their environment. which term describes this body plan?
radial symmetry
segmented

Explanation:

Organisms in Phylum Annelida (like earthworms) have a body plan with repeated, subdivided parts (segments) for flexibility. Radial symmetry is a body plan where parts are arranged around a central axis (e.g., jellyfish), not applicable here. So the term describing Annelida's body plan is "segmented".

Answer:

segmented