Multiple choice

Which of the following statements is false regarding the pearls?

  1. A pearl is made up of calcium carbonate.

  2. The unique luster of pearls depends upon the reflection, refraction and diffraction of light.

  3. Pearls can be dissolved in vinegar.

  4. Nacreous pearls are primarily produced by bivalves or clams.

  5. Cultured pearls are the response of the shell to a tissue regeneration.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Cultured pearls are the response of the shell to a tissue implant. A tiny piece of mantle tissue from a donor shell is transplanted into a recipient shell.

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