GATE Global and Regional Environmental Issues: Ecology and Ecosystems – Previous Year Questions

5 GATE previous year questions on Ecology and Ecosystems (Global and Regional Environmental Issues, Environmental Science and Engineering) with answers and explanations, from every paper.

1. GATE 2022 ES Q26 (1 mark, Multiple choice) – Which ecosystem statement is NOT correct?
2. GATE 2022 ES Q50 (2 marks, Multiple select) – Which phosphorus-cycle statements are NOT correct?
3. GATE 2023 ES Q42 (2 marks, Multiple choice) – Consider I Liebig’s minimum law concerns limiting scarce resources;II Shelford tolerance says only excess factors affect growth;III Shelford describes…
4. GATE 2025 ES Q30 (1 mark, Multiple select) – Which statements about lichens are correct?
5. GATE 2026 ES Q24 (1 mark, Multiple choice) – A species with an ecosystem impact disproportionately large relative to its population is called a species.