Question

The elephant tusk shell can be classified under which of the following category?

• A. Dentalium
• B. Nautilus
• C. Limax
• D. Octopus

Answer 1

The correct option is A Dentalium

The elephant tusk is defined under the genera dentalium. It is a species of scaphopod mollusc. They are greenish fading to white at the tip. This tusk shell is used for burrowing the sand with the help of the boat-like foot. They lack a head, gills and eyes. The radula is simple and the excretion is done by nephridia.

Thus, the correct answer is option A.