NEET Biodiversity and Conservation PYQs & Practice Questions

10 free NEET Biology questions on Biodiversity and Conservation, starting with previous year questions (2016–2026). Tap “Show answer” to check each one. No login needed.

Topics: Country with the Highest Biodiversity · Causes of Biodiversity Loss · Invasive Alien Species in India · Defining Features of Biodiversity Hotspots · Threatened Plants Prone to Overexploitation · Cause of Passenger Pigeon Extinction · Ex-situ Conservation Definition · Reasons for High Species Richness in Tropics · IUCN · In-situ vs Ex-situ Conservation · Causes of Biodiversity Loss - The Evil Quartet (Match List) · Convention on Biological Diversity

1. Q1NEET 2026Species Richness in the Amazonian Rainforest

   Arrange the following in descending order of number of species in the Amazonian rain forest. (a) Plants (b) Birds (c) Fishes (d) Invertebrates (e) Mammals Choose the correct answer from the options given below:

   • A. (d) > (a) > (c) > (b) > (e)
   • B. (e) > (b) > (a) > (c) > (d)
   • C. (b) > (a) > (d) > (c) > (e)
   • D. (c) > (b) > (d) > (e) > (a)
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   Answer: —

   In terms of species richness in the Amazonian rainforest, invertebrates vastly outnumber all other groups, followed by plants, then fishes, then birds, and finally mammals, which have the fewest species among these groups: Invertebrates > Plants > Fishes > Birds > Mammals.

2. Q2NEET 2026Term for exploring molecular/genetic/species diversity

   Exploring molecular, genetic and species-level diversity for products of economic importance is called:

   • A. Bioprospecting
   • B. Biofortification
   • C. Biomagnification
   • D. Bioremediation
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   Answer: —

   This exploration for economically useful products is called bioprospecting.

3. Q3NEET 2026Mass extinction and sixth episode

   Since the origin and diversification of life on Earth, there have been five episodes of mass extinction of species. How is the sixth extinction, which is in progress, different from the previous episodes?

   • A. The current species extinction rates are far lower than those in previous episodes
   • B. The present species extinction rates are 100 to 1000 times faster than in the pre-human times
   • C. The present net species extinction rate is nearly zero
   • D. The current species extinction rate is nearly 10 times faster than that in previous episodes
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   Answer: A — The current species extinction rates are far lower than those in previous episodes

   The sixth (ongoing, human-caused) mass extinction is characterized by extinction rates estimated at 100-1000 times the natural background rate.

4. Q4NEET 2026Causes of 'The Evil Quartet' of biodiversity loss

   'The Evil Quartet' of biodiversity loss includes which of the following?

   • A. Over-exploitation; Alien species invasions; Soil pollution; Co-extinctions
   • B. Habitat loss and fragmentation; Air pollution; Water pollution; Co-extinctions
   • C. Habitat loss and fragmentation; over-exploitation; Alien species invasions; Co-extinctions
   • D. Over-exploitation; Alien species invasions; Air pollution; Co-extinctions
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   Answer: B — Habitat loss and fragmentation; Air pollution; Water pollution; Co-extinctions

   The Evil Quartet: habitat loss and fragmentation, over-exploitation, alien species invasions, and co-extinctions.

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5. Q5NEET 2026In situ conservation method

   Which of the following is an in situ conservation method?

   • A. Seed Banks
   • B. Sacred Groves
   • C. Botanical Gardens
   • D. Wildlife Safari Parks
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   Answer: A — Seed Banks

   Sacred Groves are an in situ conservation method, protecting species in their natural habitat; seed banks and botanical gardens are ex situ.

6. Q6NEET 2026Correct statements about habitat loss/extinction examples

   Which of the following statements are correct? A. The Amazon rainforest being cut and cleared for cultivation of soyabeans is an example of habitat loss. B. Steller's sea cow and passenger pigeon became extinct due to over-exploitation by humans. C. The Nile perch introduced into Lake Victoria in East Africa helped in population growth of cichlid fish in the lake. D. Water hyacinth is an invasive species. E. When a species becomes extinct, the plant and animal species associated with it are not affected.

   • A. A, B and D only
   • B. A, B, D and E only
   • C. A, B and E only
   • D. C, D and E only
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   Answer: —

   A is true (habitat loss example). B is true (over-exploitation led to their extinction). D is true (water hyacinth is invasive). C is false (Nile perch caused decline, not growth, of cichlid populations). E is false (co-extinction occurs). A, B and D only.

7. Q7NEET 2025In-situ vs Ex-situ Conservation

   Which one of the following is an example of ex-situ conservation?

   • A. National Park
   • B. Wildlife Sanctuary
   • C. Zoos and botanical gardens
   • D. Protected areas
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   Answer: B — Wildlife Sanctuary

   Ex-situ conservation involves taking threatened animals/plants out of their natural habitat and placing them in a special protected setting. Zoological parks and botanical gardens serve this purpose. National parks, wildlife sanctuaries, and protected areas are forms of in-situ conservation.

8. Q8NEET 2025Causes of Biodiversity Loss - The Evil Quartet (Match List)

   Match List-I with List-II: List-I: (A) The Evil Quartet (B) Ex situ conservation (C) Lantana camara (D) Dodo List-II: (I) Cryopreservation (II) Alien species invasion (III) Causes of biodiversity losses (IV) Extinction Choose the option with all correct matches.

   • A. A-III, B-II, C-I, D-IV
   • B. A-III, B-I, C-II, D-IV
   • C. A-III, B-IV, C-II, D-I
   • D. A-III, B-II, C-IV, D-I
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   Answer: A — A-III, B-II, C-I, D-IV

   The Evil Quartet refers to the causes of biodiversity losses (III). Ex situ conservation includes methods like cryopreservation (I). Lantana camara is an example of alien species invasion (II). Dodo is an example of extinction (IV). So A-III, B-I, C-II, D-IV.

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9. Q9NEET 2024Ex-situ Conservation Definition

   The type of conservation in which the threatened species are taken out from their natural habitat and placed in special setting where they can be protected and given special care is called:

   • A. Semi-conservative method
   • B. Sustainable development
   • C. in-situ conservation
   • D. Biodiversity conservation
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   Answer: C — in-situ conservation

   This describes ex-situ conservation (taking threatened species out of their natural habitat for special protection); among the given options, 'Biodiversity conservation' is marked as the closest/intended correct answer per the answer key. 12th NCERT Page No. 225.

10. Q10NEET 2024Reasons for High Species Richness in Tropics

    Tropical regions show greatest level of species richness because A. Tropical latitudes have remained relatively undisturbed for millions of years, hence more time was available for species diversification. B. Tropical environments are more seasonal. C. More solar energy is available in tropics. D. Constant environments promote niche specialization. E. Tropical environments are constant and predictable. Choose the correct answer from the options given below:

    • A. A, B and E only
    • B. A, B and D only
    • C. A, C, D and E only
    • D. A and B only
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    Answer: B — A, B and D only

    Reasons for high tropical species richness: tropical latitudes remained undisturbed for millions of years allowing more time for diversification (A), more solar energy is available promoting higher productivity (C), relatively constant and predictable environments promote niche specialization (D and E). Tropical environments are LESS seasonal, not more (B is false). So A, C, D and E only. 12th NCERT Page No. 220.