Question

Identify the correct statements from the following.
(I) Predator helps in maintaining species diversity
(II) A lion eating a deer and a sparrow eating grain are ecologically similar in being consumers
(III) Predators ultimately lead to the extinction of prey species
(IV) Production of chemicals such as nicotine, strychnine by plants are metabolic disorders

Choose the correct option:

• A. I and II
• B. II and III
• C. III and IV
• D. I and IV

Answer 1

The correct option is A I and II

Equilibrium in the ecosystem is maintained by the predator-prey relationship. So predators help in maintaining species diversity by maintaining the prey populations but never lead to extinction because if it was so then it would have been a question mark on their survival.

A lion eating a deer and a sparrow eating grain are ecologically similar in being consumers though they belong to different trophic levels.

Production of chemicals such as nicotine, strychnine by plants are secondary metabolites which help in defence mechanisms and are very useful for human beings. Thus, statements I and II are correct in the above given statements.