Example 1 · difficulty 1/5
After accounting for incomplete knowledge, especially in tropical regions, Robert May placed global species diversity at about
- A. 7 million species
- B. 1.5 million species
- C. 70 million species
- D. 45,000 species
2020 source guide · Biology
NEET 2020 Biology Biodiversity and Conservation Questions
Use this page to connect the official 2020 paper with current Biology practice. NeetVellum does not claim a chapter appeared in that paper until the official question and final key have been mapped.
What to master
patterns, loss, hotspots, conservation methods and ecosystem value.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 3/5
Use the constants 1.5 million described species and 7 million estimated total species. The described fraction is closest to
- A. 7 per cent
- B. 22 per cent
- C. 47 per cent
- D. 70 per cent
Example 3 · difficulty 3/5
If 22 per cent of the estimated total species have been recorded, what percentage remains unrecorded under the same assumption?
- A. 22 per cent
- B. 44 per cent
- C. 78 per cent
- D. 88 per cent
The evidence-first practice loop
- 1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
- 2. Attempt closed-bookExpose the concept or execution gap before rereading.
- 3. Repair and returnClassify the miss and re-practice after a delay.
Canonical chapter practice
Frequently asked questions
Are these official NEET 2020 Biology Biodiversity and Conservation PYQs?
No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.
How should I use the NEET 2020 paper?
Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.