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Study the four statements () and select the two correct ones:(a) A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers.(b) Predator star fish Pisaster helps in maintaining species diversity of some invertebrates.(c) Predators ultimately lead to the extinction of prey species.(d) Production of chemicals such as nicotine by plants are metabolic disorders.

  1. A
    (a) and (b)
  2. B
    (b) and (c)
  3. C
    (c) and (d)
  4. D
    (a) and (d)

Solution & Step-by-step Explanation

1. (a) is correct: Both are heterotrophs consuming other organisms for energy.2. (b) is correct: This is a classic example of predation maintaining diversity by preventing a single prey species from dominating and excluding others through competition.(c) is wrong; predators rarely cause extinction as it would lead to their own starvation. (d) is wrong; secondary metabolites are defence mechanisms, not disorders.

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Study the four statements () and select the two correct ones:(a) A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers.(b) Predator star fish Pisaster helps in maintaining species diversity of some invertebrates.(c) Predators ultimately lead to the extinction of prey species.(d) Production of chemicals such as nicotine by plants are metabolic disorders.
A
(a) and (b)
B
(b) and (c)
C
(c) and (d)
D
(a) and (d)

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