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Read the following statements and select...

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.

A

Both statements 1 and 2 are correct

B

Statement 1 is correct but statement 2 is incorrect

C

Statement 1 is incorrect but statement 2 is correct

D

Both statements 1 and 2 are incorrect

Text Solution

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The correct Answer is:
A
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The Prickly pear cactus introduced into Australia in the early 1920's caused havoc by spreading rapidly in to millions of hectares of rangeland because -

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NCERT FINGERTIPS ENGLISH-ORGANISMS AND POPULATION-Organisms And Population
  1. Which type of interaction is being shown in the given figure ?

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  2. Which of the following is an advantage of predation ?

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  3. Read the following statements and select the correct option. Stateme...

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  4. The pricky pear cactus became unusually abundant after its introductio...

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  5. Why you never see cattle or goats browsing on weed Calotropis ?

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  6. Which of the following is not an example of prey- predator relationshi...

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  7. On the rocky sea coasts of Scotland, the larger and competitively supe...

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  8. Competitive exclusion principle stating that inferior species is elimi...

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  9. Two different species cannot live for long duration in the same niche ...

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  10. Two species competing for the same resource can avoid competition by c...

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  11. When two similar species live in the same area, they may evolve to bec...

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  12. Which of the following statements is/are correct ?

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  13. In laboratory experiments, two species of the protist Paramecium (spec...

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  14. Read the following statements and select the correct option. Stateme...

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  15. Cowbirds lay their eggs in the nests of smaller birds. The fast-develo...

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  16. Which of the following statements is/are incorrect ? (i) The liver f...

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  17. Read the given examples of animal interactions. (i) An orchid growi...

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  18. An interaction between two individuals where one is benefitted while t...

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  19. Which of the following exhibits mutualism ?

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  20. The plant-animal interactions often involve co-evolution of the mutual...

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