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Study the four statements given below and select the two correct ones out of them.
1) A lion eating a deer and a sparrow feeding on grains are ecologically similar in being consumers
2) Predator star fish ‘Pisaster’ helps in maintaining species diversity of some invertebrates
3) Predators ultimately lead to the extinction of prey species
4) Production of chemicals such as nicotine and strychnine by the plants are metabolic disorders
The two correct statements are

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(2) and (3)

(3) and ( 4)

(1) and (4)

(1) and (2)

answer is D.

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Detailed Solution

Predators do not cause the complete extinction of prey species.

Production of chemicals such as nicotine and strychnine by the plants are the defense mechanism.

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