NEET Topic-wise & A
Topic 1: LEVELS OF BIODIVERSITY & GLOBAL SPECIES DIVERSITY
NEET: Previous Years Questions
01. According to Robert May, the global species diversity is about
(1) 50 million
(2) 7 million
(3) 1.5 million
(4) 20 million (NEET 2020)
✅ (2) 7 million
Model Questions
02. Who popularized the term ‘biodiversity’?
(1) Robert May
(2) Edward Wilson
(3) Humboldt
(4) Borlaug
✅ (2) Edward Wilson
03. Choose the right one which denotes genetic diversity in correct sequence.
(1) Nucleotides → Genes → Chromosomes → Individuals → Populations
(2) Chromosomes → Nucleotides → Genes → Individuals → Populations
(3) Populations → Individuals → Chromosomes → Nucleotides → Genes
(4) Genes → Nucleotides → Chromosomes → Individuals → Populations
✅ (1) Nucleotides → Genes → Chromosomes → Individuals → Populations
04. Deserts, forests, alpine meadows etc. are examples for
(1) Diversity at genetic level
(2) Diversity at species level
(3) Diversity at ecosystem level
(4) All of these
✅ (3) Diversity at ecosystem level
05. Diversity of the habitats over the landscape or geographical area is called
(1) Alpha diversity
(2) Beta diversity
(3) Gamma diversity
(4) Species diversity
✅ (3) Gamma diversity
06. According to IUCN (2004) the number of species described so far is
(1) 15 million
(2) 1.5 million
(3) 15 billion
(4) 1.5 billion
✅ (2) 1.5 million
07. Find out the false statement related with species richness of the world.
(1) There are more than 20,000 species of ants and 3,00,000 species of beetles
(2) There are more than 28,000 species of fishes and nearly 20,000 species of orchids
(3) Tropical forest region like Ecuador has up to 10 times of vascular plant species as compared to a temperate forest region like the Midwest of USA
(4) Number of fungi species is less than the combined total of the species of fishes, amphibians, reptiles & mammals
✅ (4) Number of fungi species is less than the combined total of the species of fishes, amphibians, reptiles & mammals
08. Given here is a pie chart representation of the extent of global diversity of invertebrates. What groups the four portions (A-D) represent respectively?
(1) A- Insects, B- Molluscs, C- Crustaceans, D- Other animal groups
(2) A- Insects, B- Crustaceans, C- Other animal groups, D- Molluscs
(3) A- Crustaceans, B- Insects, C- Molluscs, D- Other animal groups
(4) A- Molluscs, B- Other animal groups, C- Crustaceans, D- Insects
✅ (1) A- Insects, B- Molluscs, C- Crustaceans, D- Other animal groups
09. Biologists are not sure about total number of many prokaryotic species because
(1) Conventional taxonomic methods are not suitable for identifying microbial species.
(2) In laboratory, many species cannot be cultured.
(3) Biochemical or molecular criteria for delineating prokaryotic species is not widely accepted.
(4) All the above.
✅ (4) All the above.
Topic 2: PATTERNS AND IMPORTANCE OF BIODIVERSITY
NEET: Previous Years Questions
10. Match List I with List II.
Choose the correct answer from the options given below:
(1) A-II, B-III, C-I, D-IV
(2) A-III, B-I, C-IV, D-II
(3) A-I, B-III, C-II, D-IV
(4) A-III, B-IV, C-II, D-I (NEET 2024)
✅ (2) A-III, B-I, C-IV, D-II
11. 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.
(1) A, C, D and E only
(2) A and B only
(3) A, B and E only
(4) A, B and D only (NEET 2024)
✅ (1) A, C, D and E only
12. Which of the following regions of the globe exhibits highest species diversity?
(1) Himalayas
(2) Amazon forests
(3) Western Ghats of India
(4) Madagascar (NEET 2020)
✅ (2) Amazon forests
13. Alexander von Humboldt described for the first time
(1) laws of limiting factor
(2) species area relationships
(3) population growth equation
(4) ecological biodiversity (NEET 2017)
✅ (2) species area relationships
Model Questions
14. Latitudinal range of tropics is
(1) 20.5° N to 20.5° S
(2) 23.5° N to 23.5° S
(3) 33.5° N to 33.5° S
(4) 43.5° N to 43.5° S
✅ (2) 23.5° N to 23.5° S
15. The relation between species richness and area is describes on a logarithmic scale by the equation
(1) Log S = log C – Z log A
(2) Log S = Z log A
(3) Log S = log C + Z log A
(4) Log S = log C
✅ (3) Log S = log C + Z log A
16. Species richness is highest in tropics because
(1) Tropics had more evolutionary time
(2) Tropics has relatively constant environment
(3) Tropics gets more solar energy
(4) All the above
✅ (4) All the above
17. Rivet Popper Hypothesis is proposed by
(1) Paul Ehrlich
(2) Humboldt
(3) David Tilman
(4) Robert May
✅ (1) Paul Ehrlich
18. Based on Rivet Popper Hypothesis, honeybees can be compared to
(1) Rivets on the seats of airplane
(2) Rivets on the windows of airplane
(3) Rivets on the wings of airplane
(4) Passenger in airplane
✅ (3) Rivets on the wings of airplane
Topic 3: BIODIVERSITY LOSS AND CONSERVATION
NEET: Previous Years Questions
19. List of endangered species was released by
(1) GEAC
(2) WWF
(3) FOAM
(4) IUCN (NEET 2024)
✅ (4) IUCN
20. These are regarded as major causes of biodiversity loss:
A. Over exploitation
B. Co-extinction
C. Mutation
D. Habitat loss and fragmentation
E. Migration
Choose the correct option:
(1) A, C and D only
(2) A, B, C and D only
(3) A, B and E only
(4) A, B and D only (NEET 2024)
✅ (4) A, B and D only
21. 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
(1) in situ conservation
(2) Biodiversity conservation
(3) Semi-conservative method
(4) Sustainable development (NEET 2024)
✅ (2) Biodiversity conservation
22. Among ‘The Evil Quartet’, which one is considered the most important cause driving extinction of species?
(1) Over exploitation for economic gain
(2) Alien species invasions
(3) Co-extinctions
(4) Habitat loss and fragmentation (NEET 2023)
✅ (4) Habitat loss and fragmentation
23. The historical Convention on Biological Diversity, ‘The Erath Summit’ was held in Rio De Janeiro in the year
(1) 1992
(2) 1986
(3) 2002
(4) 1985 (NEET 2023)
✅ (1) 1992
24. Which of the following is the most important causes for animals and plants being driven to extinction?
(1) Habitat loss and fragmentation
(2) Drought and floods
(3) Economic exploitation
(4) Alien species invasion (NEET 2019)
✅ (1) Habitat loss and fragmentation
25. Which one of the following is not a method of in situ conservation of biodiversity?
(1) Biosphere Reserve
(2) Wildlife Sanctuary
(3) Botanical Garden
(4) Sacred Grove (NEET 2019)
✅ (3) Botanical Garden
26. All of the following are included in Ex situ conservation except
(1) Wildlife safari park
(2) Sacred groove
(3) Botanical garden
(4) Seed bank (NEET 2018)
✅ (2) Sacred groove
27. The Earth Summit held in Rio de Janeiro in 1992 was called
(1) to reduce CO2 emissions and global warming.
(2) for conservation of biodiversity and sustainable utilization of its benefits.
(3) to assess threat posed to native species by invasive weed species.
(4) for immediate steps to discontinue use of CFCs that were damaging the ozone layer. (NEET 2019)
✅ (2) for conservation of biodiversity and sustainable utilization of its benefits.
28. Red list contains data or information on
(1) all economically important plants
(2) plants whose products are in international trade
(3) threatened species
(4) marine vertebrates only (NEET-II 2016)
✅ (3) threatened species
Model Questions
29. IUCN Red List (2004) documents extinction of …… species
(1) 1200
(2) 784
(3) 338
(4) 359
✅ (2) 784
30. Stellar’s sea cow, passenger pigeon etc. are extinct mainly due to
(1) Alien species invasion
(2) Overexploitation
(3) Co-extinction
(4) Habitat loss
✅ (2) Overexploitation
31. Which of the following is not ‘The Evil Quartet’?
(1) Habitat loss
(2) Over exploitation
(3) Co-extinction
(4) Drought
✅ (4) Drought
32. Example for co-extinction is
(1) Extinction of Didus ineptus
(2) Extinction of parasites
(3) Extinction of pollinator
(4) All of these
✅ (4) All of these
33. The ecosystem service that gives aesthetic value is
(1) Ecotourism, bird-watching, gardening, pet keeping, wildlife etc.
(2) Maintenance of gaseous composition of atmosphere
(3) Climate control, natural pest control, pollination etc.
(4) Purification of water and nutrient cycling
✅ (1) Ecotourism, bird-watching, gardening, pet keeping, wildlife etc.
34. What is true about biosphere reserves?
(1) Wild populations are protected
(2) Native tribal are protected
(3) Cultivated plants and domesticated animals are protected
(4) All the above are protected
✅ (4) All the above are protected
35. In a biosphere reserves, 1. Core zone 2. Buffer zone and 3. Transition (manipulation) zone represent
(1) 1. No human activity 2. Limited human activity 3. Full human activity without ecological disturbance
(2) 1. Limited human activity 2. No human activity 3. Full human activity without ecological disturbance
(3) 1. Full human activity without ecological disturbance 2. No human activity 3. Limited human activity
(4) 1. Full human activity without ecological disturbance 2. Limited human activity 3. No human activity
✅ (1) 1. No human activity 2. Limited human activity 3. Full human activity without ecological disturbance
36. Vulnerable taxon means
(1) Facing a very high risk of extinction in the wild in the immediate future
(2) Facing a very high risk of extinction in the wild in the near future
(3) Facing a high risk of extinction in the wild in the medium-term future
(4) All of the above
✅ (3) Facing a high risk of extinction in the wild in the medium-term future
37. Which of the following is not broadly utilitarian argument?
(1) Pollination
(2) Provision of oxygen
(3) Provision of food
(4) Intrinsic value of species
✅ (4) Intrinsic value of species
38. Odd man out.
(1) National park
(2) Sanctuaries
(3) Zoological park
(4) Sacred Forest
✅ (3) Zoological park
39. Number of hotspots in world
(1) 3
(2) 34
(3) 112
(4) 96
✅ (2) 34
40. The Earth Summit (1992) was conducted in
(1) Johannes Berg
(2) Rio de Jeneiro
(3) Washington
(4) Paris
✅ (2) Rio de Jeneiro
41. Example for alien species invasion
(1) Nile perch
(2) Parthenium
(3) Eichhornia
(4) All of these
✅ (4) All of these
42. Number biosphere reserves in India
(1) 14
(2) 90
(3) 448
(4) 22
✅ (1) 14