NEET Prep

Biodiversity and Conservation

21 NEET questions on Biodiversity and Conservation. A sample is shown below with full explanations; the rest are available free after signing up.

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Biodiversity and Conservation2026medium

Q1.Arrange the following in descending order of number of species in the Amazonian rain forest. Choose the correct answer from the options given below:

  • (a) Plants
  • (b) Birds
  • (c) Fishes
  • (d) Invertebrates
  • (e) Mammals.
  • A(c) > (b) > (d) > (e) > (a)
  • B(d) > (a) > (c) > (b) > (e)Answer
  • C(e) > (b) > (a) > (c) > (d)
  • D(b) > (a) > (d) > (c) > (e)

Explanation

The Amazon holds more than 125,000 invertebrate species, over 40,000 plants, about 3,000 fishes, 1,300 birds and 427 mammals. Invertebrates dominate any such count — they are by far the most speciose group on Earth — and the vertebrates trail well behind.

Source: NEET 2026 re-exam (21 June), Code 50, Q144

Biodiversity and Conservation2026medium

Q2.Given below are two statements: In the light of the above statements, choose the most appropriate answer from the options given below:

  • Assertion A: Abingdon tortoise in Galapagos islands became extinct within a decade after goats were introduced.
  • Reason R: Goats were more efficient at browsing than Abingdon tortoise.
  • ABoth A and R are correct and R is the correct explanation of AAnswer
  • BBoth A and R are correct but R is not the correct explanation of A
  • CA is correct but R is not correct
  • DA is not correct but R is correct

Explanation

This is the textbook example of extinction by competition rather than by predation. The introduced goats stripped the vegetation faster than the tortoises could, and losing that resource is exactly what drove the tortoise extinct — so the reason explains the assertion.

Source: NEET 2026 re-exam (21 June), Code 50, Q172

Biodiversity and Conservation2025easy

Q3.Which one of the following is an example of ex-situ conservation?

  • ANational Park
  • BWildlife Sanctuary
  • CZoos and botanical gardensAnswer
  • DProtected areas

Explanation

In-situ conservation protects a species in its natural habitat, which is what national parks, wildlife sanctuaries, biosphere reserves and other protected areas do. Ex-situ conservation removes the organism from its habitat and maintains it under human care — zoological parks, botanical gardens, seed banks and cryopreservation are the standard examples.

Source: NEET 2025 (4 May), Code 45, Q99

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Questions are reformatted from NEET previous year papers with original explanations and topic tagging. NEET Prep is not affiliated with the NEET examining body.