Phylum Mollusca can be distinguished from other invertebrates by the presence of

Options

A. bilateral symmetry and exoskeleton
B. a mantle and gills
C. shell and non-segmented body
D. a mantle and non-segmented body

Answer

D

Explanation

Members of Phylum Mollusca have non-segmented body with a distinct head, muscular foot and visceral hump. A soft and spngy layer of skin forms a mantle over the visceral hump. The other characteristics mentioned in other options are shared with other phyla e.g. bilateral symmetry is exhibited by phylums Platyhelminthes, Aschelminthes, Annelida and Arthropoda.