When certain exotic species are introduced into a geographical area, they become invasive and start spreading fast because the invalid land does not have its natural

Why exotic species becomes invasive sometime and starts spreading fast because of

When a species is introduced into new geographical area becomes invasive and cause havoc by spreading rapidly, due to _________.

Read the following statements and select the correct option. Statement 1 : The prickly pear cactus introduced into Australia in early 1920 s caused havoc by spreading radpidly into millions of hectares of rangeland. Statement 2: When certain exotic species are introduced into a geographical fast because the invaded lands does not have its natural predators.

Read the following statements and select the correct option. Statement 1 : The prickly pear cactus introduced into Australia in early 1920 s caused havoc by spreading rapidly into millions of hectares of rangeland. Statement 2: When certain exotic species are introduced into a geographical fast because the invaded lands does not have its natural predators.

An exotic species that is introduced to a new area, spreads rapidly and eliminates native species is called

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.

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.