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NEET · Biology · Class 12

Biodiversity and Conservation — NEET Biology MCQs

30 questions written by hand against the NCERT chapter. Every wrong option is explained, not just the right one.

30questions
10/14/6easy / medium / hard
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Sample questions from this chapter

Variation in reserpine concentration among Rauwolfia populations across Himalayan ranges illustrates
  1. genetic diversity ✓
  2. species diversity
  3. ecological diversity
  4. habitat fragmentation
Answer: A. Genetically distinct populations of the same species may differ in biochemical traits such as the potency and concentration of an active compound.
Why not B: The example compares variation within one species rather than counts of different species.
Why not C: Ecological diversity compares habitats or ecosystems.
Why not D: Fragmentation divides a continuous habitat and is not the diversity level shown.
Why are global prokaryotic species counts especially uncertain?
  1. Conventional taxonomy poorly captures microbial species and many microbes cannot be cultured in laboratories ✓
  2. Prokaryotes occur solely in polar regions
  3. Each prokaryote is visible without microscopy
  4. Molecular criteria show that all bacteria are one species
Answer: A. Culture-dependent and traditional morphological methods miss much microbial diversity; molecular delimitation may reveal millions of taxa.
Why not B: Prokaryotes occupy diverse habitats worldwide.
Why not C: Their small size is one practical challenge, not evidence of easy visual identification.
Why not D: Biochemical and molecular criteria suggest enormous hidden diversity.
Two reserves have equal area. Reserve X contains many endemic species under rapid habitat loss; reserve Y contains widespread species in intact habitat. Why would hotspot logic prioritise X?
  1. Protecting X prevents loss of many unique species that have no populations elsewhere ✓
  2. Endemic species can relocate globally without habitat
  3. Intact habitats have zero conservation value
  4. Rapid habitat loss increases species richness automatically
Answer: A. Hotspot prioritisation combines biological irreplaceability with threat. Limited funds can avert more irreversible loss where unique species face imminent habitat destruction.
Why not B: Restricted ranges make endemic species less able to survive regional destruction.
Why not C: Y still has value; prioritisation reflects urgency and irreplaceability.
Why not D: Habitat loss threatens richness rather than producing it.

These are 3 of the 30 questions in the test. Take the full chapter test →

Read the chapter first

Every NCERT question in this chapter is solved, free: NCERT solutions — Biodiversity and Conservation →

Other NEET Biology chapters

The Living WorldBiological ClassificationPlant KingdomAnimal KingdomMorphology of Flowering PlantsAnatomy of Flowering Plants

All 32 chapters →

Questions

How many NEET questions are there on Biodiversity and Conservation?

This chapter test has 30 questions — 10 easy, 14 medium and 6 hard — all written against the NCERT Class 12 chapter.

Is this NEET Biology chapter test free?

Yes. Every chapter test is free with no login. The only paid thing on the site is the full-length 90-question Biology mock and its all-India rank.

Do the questions explain the wrong options?

Yes — every distractor carries its own explanation naming the specific misconception that makes a student pick it. That is the part most question banks skip, and it is the part that changes your next attempt.