2006-12-22 16:55:17 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Zoology
yes
Pearls begin with the presence of a foreign substance, such as a grain of sand, that lodges in the shell. The oyster's body reacts by depositing layers of nacreous (pearl-like) material around the foreign body to wall it off and reduce irritation. Many oysters--as well as some clams and mussels--manufacture material like the pearl- producing substance. True pearl-producing oysters, however, inhabit waters of the Indo Pacific.
2006-12-22 17:38:43 · answer #1 · answered by jamaica 5 · 0⤊ 0⤋
It takes an quite lengthy time period for oysters to make stronger pearls. It does happen, yet you hardly ever locate them in nature. lately, maximum pearls are "cultured pearls", you may google that one. Im quite particular mussels and clams dont have them.
2016-10-16 21:15:48 · answer #2 · answered by ? 4 · 0⤊ 0⤋
No. Commercial pearls are produced only by Pearl oysters of The genus Pinctada.
Please click on the link below.
http://en.wikipedia.org/wiki/Pearl_oyster
2006-12-22 20:45:30 · answer #3 · answered by Anonymous · 0⤊ 1⤋
No
2006-12-22 17:30:21 · answer #4 · answered by Anonymous · 0⤊ 1⤋