In a specimen-based viva, the examiner describes this case: a tiny freshwater animal creates feeding currents using a wheel-like crown of cilia near the head. Choose the concept that fits it best.

Correct Answer: C

corona

Rotifers possess a corona, a ciliated crown that helps in locomotion and feeding. The beating cilia may appear like rotating wheels under the microscope. This MCQ belongs to the Rotifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.