Question

Nautilus occurs in its shell in

• A. First chamber
• B. All chambers
• C. Last chamber
• D. Partly in first chamber and partly outside

Answer 1

The correct option is C Last chamber

The only cephalopod with an external shell is genus Nautilus. They are the most ancient cephalopod belonging to subclass Nautiloidea. Their shells resembles that of snail. Their shells are spirally coiled and are have chambers internally. They grow into larger chambers throughout their life. Nautilus occurs in its shell in last chamber.

Thus, the correct answer is option C.