Question

Explain the process of pearl formation and write the name of any four types of pearls.

Answer 1

Pearl is also known as moti or mukta. It is white, highly shining, globular natural animal product found within the shell of oyster which is a mollusk.

Pearl formation: The formation of pearl occurs as a result of the defensive response of the oyster. Whenever any foreign object such as a sand grain or a microorganism enters between mantle and shell, the mantle epithelium sets stimulated and surrounds intruder completely. Now the mantle epithelium starts secreting concentric layers and nacre around the intruder. In due course of time, several layers of nacre are secreted resulting into the formation of pearl.

Types of pearl-

(i) Lingha pearls

(ii) Seed pearls

(iii) Button pearls

(iv) Blister pearls.