Multiple Choice
Cultured pearls are made by
A) cutting spherical balls from the thick shell of oysters and polishing them into circular beads.
B) dropping a grain of sand into the incurrent siphon of a pearl oyster.
C) tying off the labial palps.
D) growing oysters in high-calcium waters where they produce the pearls as unfertilized eggs.
E) placing an irritating particle under the shell mantle.
Correct Answer:
Verified
Correct Answer:
Verified
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