MPPSC Ecology & Ecosystems — Previous Year Questions

Madhya Pradesh Public Service Commission has asked 8 questions on Ecology & Ecosystems across 6 papers (2018–2025). Every one is solved below — open a question for the answer, why it is right, and why each wrong option was written to tempt you.

1. 2025Q88The entire sequence of communities that successively change in a given area are called:Answer: B
2. 2024Q10In the aquatic ecosystem of a pond, which of the following components is represented by fungi, bacteria and flagellates?Answer: B / C
3. 2023Q6Which among the following is the most stable ecosystem?Answer: C
4. 2023Q8In an ecosystem, flow of energy declines as it passes from lower to higher trophic level. This is explained by the following:Answer: B
5. 2022Q5The area that acts as a boundary or a transition zone between two ecosystems is known asAnswer: D
6. 2022Q57Sundarbans are which of the following types of forests?Answer: D
7. 2020Q87The pyramid of energy in any ecosystem isAnswer: A
8. 2018Q9When is the 'International Earth Day' celebrated?Answer: C