Pearl is produced by _____ mollusc.

موتی _____ مولسک کے ذریعہ تیار کیا جاتا ہے۔

Bivalve

Monovalve

Trivalve

None of these

Pearls are produced by bivalve mollusks, such as oysters and mussels.

The pearl forms when an irritant gets trapped inside the mollusk, and layers of nacre are deposited around it.