A) Limulus
B) Palaemon
C) Pinctada
D) Plasmodium
Correct Answer: C
Solution :
Pearl is also called as Moti. It is white, highly shining, globular in shape and made by the clam, a mollusc called oyster within its shell. Pearls are prized as gems from ancient times. Pearls are among the most beautiful and valuable of our jewels. Kokichi Mikimoto of Toba (Japan) is known to be the father of pearl industry. He discovered a method to induce foreign particle between the mantle and the shell of the pearl oyster and thus stimulated pearl formation. Pearls are often found in clams and edible oysters, but these are not nacreous and therefore, they are of little value. Most precious pearls are found in pearl oysters of the genus Pinctada. Important species for pearls are Pinctada vulgaris, Pinctada chemnitizi, Pinctada margaritifera, Pinctada anomioides and Pinctada atropurpurea found in Indian water. Pinctada vulgaris which is closely related to freshwater mussel is a common species distributed in Gulf of Kutch, Gulf of Mannar and the Palk Bay and Baroda. Limulus or king crab is a large sized marine arthropod and called a living fossil. Palaemon inhabits freshwater streams, rivers ponds and lakes. Plasmodium is a parasite in human infects malaria fever.
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