Rotifera body symmetry is which of the following?

• A. Bilaterally symmetric
• B. Radially symmetric
• C. Asymmetric
• D. Spherical

Answer: (A)

Rotifers are bilaterally symmetric. This means there is a single plane that runs from head to tail, dividing the body into two mirror-image halves along a left-right axis. In rotifers, you can clearly identify a front end with the feeding apparatus (the corona) and a back end (the foot), with internal organs laid out in a way that reflects this front–back orientation. This contrasts with radial symmetry, where any plane through the center can split the body into mirror images (as in jellyfish or starfish), or with spherical symmetry, where the body would be ball-shaped and mirrorable from multiple directions.