Four Functional Components of Ecosystems — NEET Biology
✅ Asked in NEET 2024(NEET 2024) Which of the following statements is incorrect regarding an ecosystem?
(NEET 2024) Which of the following statements is incorrect regarding an ecosystem?
Answer & NCERT explanation
Correct answer: D — It involves the function of the flow of energy but not the recycling of nutrients
Option d is incorrect because ecosystems involve BOTH energy flow AND nutrient recycling. NCERT emphasizes that ecosystems are characterized by two main functions: unidirectional energy flow (from sun to producers to consumers) and cyclic nutrient flow (biogeochemical cycles like carbon, nitrogen cycles). Energy flows one way and gets lost as heat, but nutrients like N, P, C are recycled continuously through decomposition and biogeochemical cycles.
Read more NCERT concept on the PYQ
The components of the ecosystem are seen to function as a unit when you consider the following aspects: (i) Productivity; (ii) Decomposition; (iii) Energy flow; and (iv) Nutrient cycling.
The NTA tests whether students understand that ecosystems function as integrated units through four key processes: productivity (energy capture), decomposition (nutrient release), energy flow (through food chains), and nutrient cycling (elements recycled between biotic and abiotic components). Students often confuse nutrient cycling with energy flow—remember that energy flows ONE-WAY through ecosystems (enters as sunlight, exits as heat), while nutrients cycle REPEATEDLY. The trap: thinking both follow the same pattern. To score correctly, link each component to its definition: productivity = primary production, decomposition = breaking down dead matter, energy flow = movement through trophic levels, and cycling = circular pathways of N, P, C, S. This concept will likely reappear given its fundamental importance to ecosystem ecology.
What does NCERT say about components ecosystem are seen?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 88 of 90 questions from the NEET 2026 paper were matched straight from the MedicNEET Biology question bank.
88/90MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.