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Question

Which of the following oysters have a strong inner shell layer composed of nacre, also known as mother of pearl?

A
Cliona
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B
Cheloina
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C
Pinctada
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D
Euspongia
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Solution

The correct option is C Pinctada
Pinctada is a genus of salt water clams, marine bivalve molluscs in the family Pteriidae, the pearl oysters. These oysters have a strong inner shell layer composed of nacre, also known as "mother of pearl". Pinctada maxima pearl oysters are the only oyster species that produces South Sea pearls.
Therefore, the correct answer is option C.

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