Question

Which of the following species is used for pearl cultivation?

• A. Oysters
• B. Prawns
• C. Carp
• D. Calbasu

Answer 1

The correct option is A

Oysters

The correct option is A.

Explanation of the correct option

1. Pearls are produced from species of oysters of the genus Pinctada like Pinctada maxima.
2. Pearl is produced when an irritant is introduced into the soft part of the body of Molluscs.
3. As a defense mechanism in response to an irritant, the Molluscs(oyster) secrets a fluid to coat the irritant in layers.
4. This layer finally forms lustrous pearls inside the exoskeleton.

Explanation of the incorrect options:

Option B: Prawns are small aquatic crustaceans with an exoskeleton and multiple legs edible to humans.

Option C: Carps are freshwater fish consumed widely around the world.

Option D: Labeo Calbasu is a popular freshwater food fish of the family Cyprinidae.

Final answer: Oyster is used for pearl cultivation.