Arthropoda exhibit which body symmetry?

• A. Bilateral
• B. Radial
• C. Asymmetric
• D. Pentaradial

Answer: (A)

Arthropods show bilateral symmetry, meaning their left and right halves are mirror images along one plane that divides the body into front and back ends. This is evident in their segmented bodies and paired appendages arranged on both sides, which supports a streamlined, forward-moving form and centralized nervous control around a head region.

Radial symmetry, found in organisms like jellyfish and many echinoderms (in adults), would have multiple planes of symmetry around a central axis. Pentaradial is a fivefold form of radial symmetry typical of some echinoderms like starfish. Asymmetric body plans occur in organisms such as sponges. But arthropods consistently display bilateral symmetry throughout their life.