Part of ECO-02 — Biodiversity & Conservation

PYQ Analysis: ECO-02 Most Tested Patterns (2018–2024)

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Question Frequency by Topic

TopicApprox. NEET Appearances (2018–2024)Pattern
Species-area relationship (Z values)4–5 timesZ range for islands vs. continents
Number of India's hotspots (4)4–5 timesWhich is NOT a hotspot
Sacred groves = in-situ3–4 timesAssertion-Reason format
CBD location/year3–4 timesRio 1992 vs. Stockholm 1972
IUCN categories3–4 timesEX vs. EW; DD meaning
Cryopreservation temperature2–3 times−196 °C (not −80 or −20)
In-situ vs. ex-situ classification4–5 timesIdentify examples
National park vs. wildlife sanctuary2–3 timesWhich is stricter
Nile perch + Lake Victoria2–3 timesInvasive species cause
Rauwolfia = genetic diversity2–3 timesWhich level of diversity

High-Confidence Predictions for NEET 2026

  1. Z value question: "In the species-area relationship, Z ranges from ___ for oceanic islands" → Answer: 0.6 to 1.2

  2. Hotspot identification: "Which is NOT a biodiversity hotspot in India?" → Watch for Eastern Ghats as a trap option

  3. Sacred groves A&R: "Sacred groves represent [in-situ/ex-situ]" → IN-SITU

  4. Conservation example identification: "Which of the following is ex-situ conservation?" → Seed bank, cryopreservation, botanical garden, zoo

  5. CBD question: "The Convention on Biological Diversity was signed at ___, in ___" → Rio de Janeiro, 1992

Scoring Strategy

  • Each correct answer = +4 marks
  • Each wrong answer = −1 mark
  • These 5 topics alone = 5 questions × 4 = 20 marks potential
  • Zero error rate possible — all based on specific, memorisable facts

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