Ecology, Ecosystem and Functions of Ecosystem: UPSC Previous Year Questions (Environment and Ecology)
1 previous year UPSC Prelims question on Ecology, Ecosystem and Functions of Ecosystem (Environment and Ecology). Choose an option to see the answer and explanation.
Explanations state facts as of the year each question was asked; words like “recently” refer to that year.
Showing 1–1 of 1 question
UPSC 2015Environment and Ecology · Ecology, Ecosystem and Functions of Ecosystem
Q1. Which one of the following is the best description of the term ‘ecosystem’?
Explanation
An ecosystem can be defined as a functional unit of nature, where living organisms (producers, consumers, and decomposers) interact among themselves and also with the surrounding physical environment. Ecosystems can be of any size and usually encompasses a diverse range of species. E.g. Aquatic Ecosystem. In the ecosystem, biotic and abiotic components are linked together through nutrient cycles and energy flows. Everything that lives in an ecosystem is dependent on the other species and elements that are also part of that ecological community. A damaged or extinct component of an ecosystem has an effect on the entire system.
Answer key for these questions
Q
UPSC year
Correct answer
1
2015
(c) A community of organisms together with the environment in which they live
Frequently asked questions
How many previous year UPSC questions are there on Ecology, Ecosystem and Functions of Ecosystem?
This page covers 1 previous year UPSC Prelims GS Paper-I questions on Ecology, Ecosystem and Functions of Ecosystem (Environment and Ecology), asked from 1996 to 2025. Each has the correct answer and an explanation.
How should I use previous year UPSC questions for Prelims?
Attempt each question first, then open the answer and read the explanation for every option. Repeat by chapter, and track which statements UPSC reuses across years. Previous year questions show the exam pattern and difficulty level.
Which years are covered for Ecology, Ecosystem and Functions of Ecosystem?
Questions on Ecology, Ecosystem and Functions of Ecosystem (Environment and Ecology) are available for 12 years, from 1996 to 2025. Use the Year filter to practise a single paper.
