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
Connect the official 2020 paper with current Biology practice without labelling original previews as PYQs.
150 original questions · explicit provenance labels
BiologyPlate 69
NeetVellum atlas · fig. biology
69
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.