Question

Select the mismatched pair in the following.
(a) Biomagnification- Accumulation of chemicals at the successive trophic levels of a food chain.
(b) Ecosystem- Biotic components of the environment.
(c) Aquarium- A man-made ecosystem.
(d) Parasites- Organisms which obtain food from other living organisms.

• A. (a) and (b)
• B. Only (b)
• C. (a), (b) and (c)
• D. Only (d)

Answer 1

Answer: (B)

Only (b)

• Biomagnification: It is also known as biological magnification, occurs when the concentration of a substance, such as DDT or mercury, in an organism, exceeds the background concentration of the substance in its diet.
• Ecosystem: An ecosystem is a community of living organisms in conjunction with the non-living components of their environment (things like air, water, and mineral soil), interacting as a system.
• Aquarium - It is a transparent tank of water in which live fish and other water creatures and aquatic plants are kept. It is an example of a man-made ecosystem.
• Parasite - A parasite is an organism that lives in or on another organism (its host) and benefits by deriving nutrients at the other's expense.

Therefore, the correct answer is option B.