Question

Assertion (A): The prickly pear cactus introduced into Australia in early 1920s caused havoc by spreading rapidly.

Reason (R): When certain exotic species are introduced into a geographical area, they become invasive and start spreading fast because the invaded land does not have the natural predators.

Options

• Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.

• Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.

• Assertion (A) is true but reason (R) is false.

• Both assertion (A) and reason (R) are false.

Answer 1

Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.

Explanation:

Both statements are true. Prickly pear spread rapidly in Australia because it lacked effective natural predators there, so the reason explains the invasion.