Which of the following statements most accurately describes the Cyclostomata group?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. They are characterised by having an elongated eel-like body, circular mouth, slimy skin and are scaleless.
- The Cyclostomata group is a class of primitive, jawless vertebrates characterized by several unique features. They have an elongated, eel-like body with a circular, suctorial mouth that lacks jaws. Their skin is slimy, glandular, and scaleless, making them distinct from other fish.
- Instead of a bony skeleton, they possess a cartilaginous endoskeleton, providing flexibility and support. Cyclostomes are primarily parasitic or scavengers, with species like lampreys (Petromyzon) and hagfish (Myxine) attaching to other fish to feed on their body fluids.