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Catla catla and Labeo rohita are two significant Indian carp species, while Heteropneustes is a type of catfish. Cyprinus is considered a foreign species.

1. Catla catla and Labeo rohita are two significant Indian carp species, while Heteropneustes is a type of catfish. Cyprinus is considered a foreign species.
2. Silk is made from the secretion of the salivary glands of silkworm larvae, which spin cocoons.
3. The Chinese silkworm, Bombyx mori, has been cultivated for silk production for many years.
4. None of these statements are correct.

Correct answer: Catla catla and Labeo rohita are two significant Indian carp species, while Heteropneustes is a type of catfish. Cyprinus is considered a foreign species.

Solution

Catla catla and Labeo rohita are indeed Indian major carps, Heteropneustes is a catfish, and Cyprinus is an exotic breed, making option A correct.

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