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Tusk shell is the common name of
Tusk shell is the common name of
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Solution
The correct option is B Dentalium
Dentalium is a genus of Phylum Mollusca, commonly known as "tusk shell". The common name is based on the tooth or tusk-shaped form of these molluscs (as seen in the image). The shells are conical and curved in a planispiral way, and they are usually whitish in color. Because of these characteristics, the shell somewhat resembles a miniature elephant's tusk. They are hollow and open at both ends; the opening at the larger end is the main or anterior aperture of the shell. The mantle of Dentalium species is entirely within the shell. The foot extends from the larger end of the shell, and is used to burrow through the substrate.
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Dentalium is a genus of Phylum Mollusca, commonly known as "tusk shell". The common name is based on the tooth or tusk-shaped form of these molluscs (as seen in the image). The shells are conical and curved in a planispiral way, and they are usually whitish in color. Because of these characteristics, the shell somewhat resembles a miniature elephant's tusk. They are hollow and open at both ends; the opening at the larger end is the main or anterior aperture of the shell. The mantle of Dentalium species is entirely within the shell. The foot extends from the larger end of the shell, and is used to burrow through the substrate.
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