The radula is a ribbon-like structure found in molluscs that functions similarly to a tongue, containing small teeth used for mastication during feeding. It provides evolutionary advantages for molluscs by aiding in feeding through its chitinous structure with teeth that bend sideways. The radula is not present in bivalve molluscs and can be either monopartite or bipartite.

1. What are the evolutionary advanteges of evolving radula?
Solution
This anatomical structure found in Molluscs
It is involved in Feeding and similar to Tounge
It is Chitinous, ribbon like structure that contain small teeth used for mastication.
It is not found in Bivalve molluscs
The radula membrane is either monopartite or bipartite (Radula split in to two)
The radula teath bend in sideway direction
All these advantages found in Molluscs due the presence of radula