The shell of Nautilus is

Bivalved

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Spirally coiled

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Multi-chambered

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Both B and C

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Solution

The correct option is D Both B and C
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 multi-chambered.
Thus, the correct answer is option D.

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