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Topic Invasive species
Asked 3 times across 2 UPSC exams over 7 years (2018–2025), peaking in 2018.
Key insights
- Most tested in CSE — 2 of 3 PYQs
- Most asked in 2018
- Recurs across 3 years (2018–2025)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CSE 2018 → GEO 2025
How the concept evolved
Rising — more than half its appearances (3 of 3) are since 2016.
Related concepts
Ideas UPSC tests alongside this one — keep exploring.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
GEO2025
Which one of the following is an example of endemic plant species of India?
- A Prosopis juliflora
- B Nepenthes khasiana ✓
- C Lantana camara
- D Parthenium hysterophorus
✓ Correct answer: (B)
Environment & Ecology › Biodiversity & Conservation
CSE2023
'Invasive Species Specialist Group' (that develops Global Invasive Species Database) belongs to which one of the following organizations?
- A The International Union for Conservation of Nature ✓
- B The United Nations Environment Programme
- C The United Nations World Commission for Environment and Development
- D The World Wide Fund for Nature
✓ Correct answer: (A)
Environment & Ecology › Biodiversity & Conservation
CSE2018
Why is a plant called Prosopis juliflora often mentioned in news ?
- A Its extract is widely used in cosmetics.
- B It tends to reduce the biodiversity in the area in which it grows. ✓
- C Its extract is used in the synthesis of pesticides.
- D None of the above
✓ Correct answer: (B)
Environment & Ecology › Biodiversity & Conservation
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