What type of symmetry do mollusca have?

Step-by-step solution

The space between the hump and the mantle is called the mantle cavity in which feather like gills are present. They have respiratory and excretory functions. The anterior head region has sensory tentacles. The mouth contains a file-like rasping organ for feeding, called radula.Body is covered by a calcareous shell and is unsegmented with a distinct head,muscular foot and visceral hump in Molluscs. Molluscs are terrestrial or aquatic (marine or fresh water) having an organ-system level of organisation. They are bila