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The alien species introduced into Lake V...

The alien species introduced into Lake Victoria that was responsible for the extinction of cichlid fishes is

A

African catfish

B

Water hyacinth

C

Carrot grass

D

Nile perch

Text Solution

Verified by Experts

The correct Answer is:
D
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Assertion : The Nile perch introduced into lake Victoria in east Africa led to the extinction of an ecologically unique assemblage of more than 200 species of cichlid fish in the lake. Reason : When alien species are introduced deliberately for economic or other uses, they often become invasive and cause extinction of indigenous species. (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c) If assertion is true but reason is false. (d) If both assertion and reason are false.

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