Which of the following aspects are considered functioning for an ecosystem as one unit?
(A) Productivity
(B) Energy Flow
(C) Mineralisation
(D) Nutrient cycling
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A), (B) and (D) only
The parts of an ecosystem work together as one unit. This can be seen in four aspects: productivity, decomposition, energy flow and nutrient cycling.
(A) Productivity — Correct. It is the rate of biomass production, the input into the ecosystem.
(B) Energy Flow — Correct. Energy flows in one direction, from the sun to producers and then to consumers.
(C) Mineralisation — Incorrect. Mineralisation is the release of inorganic nutrients from humus by microbes. It is only one step of decomposition, not one of the four aspects.
(D) Nutrient cycling — Correct. Nutrients move from the environment into organisms and back again.
NCERT Extract:
Ecosystem – Structure and Function – …
