MCQ Questions Chapter 15 Biodiversity and Conservation Class 12 Biology

Please refer to MCQ Questions Chapter 15 Biodiversity and Conservation Class 12 Biology with answers provided below. These multiple-choice questions have been developed based on the latest NCERT book for class 12 Biology issued for the current academic year. We have provided MCQ Questions for Class 12 Biology for all chapters on our website. Students should learn the objective based questions for Chapter 15 Biodiversity and Conservation in Class 12 Biology provided below to get more marks in exams.

Chapter 15 Biodiversity and Conservation MCQ Questions

Please refer to the following Chapter 15 Biodiversity and Conservation MCQ Questions Class 12 Biology with solutions for all important topics in the chapter.

MCQ Questions Answers for Chapter 15 Biodiversity and Conservation Class 12 Biology

Question- Alpha diversity is present
(a) within community.
(b) between community.
(c) ranges of communities.
(d) all of the above.

Question- Diversity of habitat over the total landscape is called
(a) b-diversity
(b) g-diveristy (gamma)
(c) landscape diversity
(d) ecosystem diversity

Question- IUCN stands for
(a) Indian Union for Conservation of Nature
(b) International Union for Conservation of Nature
(c) Indian Union for Chemical Nomenclature
(d) International Union for Conservation of Nutrients

Question- More than 70% of all the species recorded so far, are
(a) insects
(b) plants
(c) animals
(d) invertebrates

Question- The highest number of species in the world is represented by
(a) algae
(b) lichens
(c) fungi
(d) mosses

Question- Which of the following statements describe natural extinction?
A. Extinctions abetted by human activities.
B. Slow replacement of existing species
C. Also known as background extinction
D. A small population is most likely to be extinct.
(a) A, B
(b) A,B,C
(c) B, C, D
(d) A, B, C, D

Question- Which of the following fishes is exotic species introduced in India for aquaculture –
(a) Dog fish
(b) Shark
(c) Catfish (Clarias)
(d) Labeo

Question- In recent years the number of species driven to extinction has increased dramatically. Which of the following is not a reason for this?
(a) Overexploitation
(b) Habitat destruction
(c) Introduction of predators
(d) Natural predation

Question- Forest research institute in situated at-
(a) Naisital
(b) Chennai
(c) Kolkata
(d) Dehradun

Question- Of the following organisms which has the highest conservation priority?
(a) A plant found on North America and in Europe
(b) A plant endemic to Austr a
(c) A plant found on the Galapagos islands and in Brazil
(d) A plant found world wide

Question- The number of critically endangered animals and plants in India is –
(a) 4 & 8 respectively
(b) 18 & 44 respectively
(c) 180 & 4 respectively
(d) 44 & 18 respectively

Question- Match the following

Column I	Column II
I. Silent valley	(A) Kaziranga
II. Rhinoceros	(B) Bandipur
III. Tiger project in Karnataka	(C) in situ
IV. National Park	(D) Tropical evergreen forest

(a) l-B.II- A, III-D, IV-C
(b) S-D, il-A, III-B, IV-C
(c) l-A, H-C.III-B.IV-D
(d) l-B, II-A, III-C.IV-D

Question- Select incorrect statement
(a) Photochemical smog has mainly O₃, PAN and NOx
(b) CFC is most effective green house gas
(c) Biodiversity decreases from lower to higher altitudes and increases from lower to higher latitudes
(d) Dodo and Tasmanian wolf have become extinct due to overexploitation

Question- Which parameter of a population do ecologists measure to assess extinction risk for a population?
(a) genetic variation
(b) behavior
(c) physiology
(d) a, b, and c

Question-

Column I	Column II
I. Nile Perch in Lake Victoria	(A) Obvious reasons for biodiversity conservation
II. Narrowly utilitarian	(B) Habitat destruction
III. Main cause for biodiversity loss	(C) High endemism
IV. Hot spots	(D) en species

(a) j-B,si- A, HI-D, tv-c
(b) l-D, II – A, III-B, IV-C
(c) l-A. II-CJII-B, IV-D
(d) l-B,l!-A, III-CJV-D

Question- Which are in a matching sanctuary-
(a) Kaziranga-mink deer
(b) Gir-Lion
(c) Himalayas-Samber
(d) Sunderbon-phiro

Question- Select the correct statement(s).
A. India has more than 50,000 genetically different strains of rice
B. India has 1000 varieties of mango
C. The genetic variation in Rauwolfia vomitoria can be in terms of cone and potency of reserpine.
D. The tropical rain forest initially covered 14% of the land surface of earth, but now they cover only 6% of the land area.
(a) A, B
(b) A, B, C
(c) B, C, D
(d) A, B, C, D

Question- Which of the following statements is true concerning the relationship between humans and the rest of the living world?(a) Modern technology has made it so that we no longer depend on other living organisms.
(b) We are dependent on artificial ecosystems, such as agroecosystems, but gain no benefit from natural ecosystems.
(c) We are dependent on natural ecosystems at pre-sent, but the technology exists to completely replace natural ecosystems so that we will no longer depend on them.
(d) Our survival is tightly linked to the survival of natural ecosystems throughout the world.

Question- In situ strategies include-
A. Biosphere reserve B. National park C. Wildlife sanctuaries D. sacred forests / lakes
(a) A, B
(b) A, B, C
(c) B, C, D
(d) A, B, C, D

Question- How much times have forests been lost in the tropics compared to the temperate region
(a) 50 times
(b) 40 times
(c) 30 times
(d) 25 times

Question- Modern Ex situ conservation includes –
(a) cryopreservation techniques
(b) in vitrofertilisation
(c) plants can be propagated using tissue culture methods
(d) All

Question- Which is / are correct about Amazon rain forest? A. It is called Lungs of the planet.
B. It is being cut and cleared for cultivating soya beans or for conversion to grasslands for raising beef cattle.
C. The largely trophical rain forest in South America has highest biodiversity on earth
D. It harbours probably miiiion of species
(a) A, B
(b) A, B, C
(c) B, C, D
(d) A, B, C, D

Question- Ex situ conservation is used for the conservation of-
(a) All plants
(b) All animals
(c) threatened animals and plants
(d) None

Question- More than 25% of drugs are derived from plants. What benefits does this describe?
(a) Ethical value
(b) Aesthetic value
(c) Direct economic value
(d) Indirect economic value

Question- Biodiversity loss occurs due to –
A. Habitat loss and fragmentation B. Co-extinction
C. over-exploitation D. en species invasion.
(a) A, B
(b) A, B, C
(c) B, C, D
(d) A, B, C, D

Question- Bandipur (Karnataka) National park runs a project for-
(a) Peacock
(b) Deer
(c) Tiger
(d) Elephant

Question- The number of species that become extinct due to habitat destruction is greatest in _______ ecosystems with many______species.
(a) temperate, migratory (b) tropical, endemic (c) temperate, keystone (d) tropical, migratory Major causes of human-induced extinctions of species include all of the following, except
(a) climate modification.
(b) Overexploitation.
(c) habitat destruction.
(d) captive propagation.

Question- Nandan kanan zoo in known for the-
(a) Nilgiri Cows
(b) Hippopotamers
(c) White tiger
(d) Rhirocheros

Question-Column I                    Column II
I. Dodo                                    (A) Rauwolfia
II. Reserpine                          (B) Mauritius
III. Botanical gardens           (C) Khasi and Jaintia hills.
IV. Sacred forests                  (D) Ex-situ conservation
(a) l-B, II- A, IH-D.IV-C
(b) I-D, II-A, III-B, IV-C
(c) l-A, II-C, III-B, IV-D
(d) l-B, II-A, III-C, IV-D

Question- Exploring molecular, genetic and species-level diversity for products of economic importance like medicines is called-
(a) Bioremediation
(b) Bioprospecting
(c) Bioprocessing
(d) Ecosystem services.

Question- Which one the following is false about Habital loss and fragmentation?
(a) This is the most important cause driving animals and plants to extinction
(b) The most dramitic examples of habitat loss come from temperate rain forests
(c) Once convering more than 14% of the earths
(d) The Amazon rain forest harbouring probably millions of species is being cut and cleared for cultivating soya bean or for conversion to grassland for raising beef cattle

Question- A species-area relation is used by ecoiogists to –
(a) Determine the population density of a species in a certain habitat.
(b) Examine how human populations are growing
(c) Estimate the number of species extinctions resulting from habitat destruction
(d) None

Question- Which of the following statements about species-area relationships and their consequences for extinction rates is false’
(a) Species-area relationships can be used to predict future extinction rates.
(b) The number of species present increases with the size of an area.
(c) 50% of Earth’s species may become extinct in the next 50 years.
(d) Extinction rates are generally higher on mainlands than on islands.

Question- Why do species extinctions matter?
(a) They don’t matter unless the species is a human food source.
(b) Many pharmaceutical products are derived from natural products, loss of species could mean loss of therapeutic drugs.
(c) Soil erosion may increase if certain plants go extinct
(d) b and c

Question- Dudhwa national park in located is-
(a) Himachal pradest
(b) Uttar Pradesh
(c) Madhga pradesh
(d) Arunachal Pradesh

Question- Kashmir stag in commonly found in-
(a) Dachigam wild life sanctuary
(b) Manas wild life sanctuary
(c) Bhanatpur wild life Sanetuary
(d) Annamalai wild life sanectuary

Question-Column I                                   Column II
I. Western Ghats                                     (A) Sacred lake
II. Donkey                                               (B) Secondary home India
III. Khecheopairi Lake of Sikkim           (C) Hot spot
IV. Rhinoceros                                         (D)Kaziranga
(a) l-B,ll- A,III-D,IV-C
(b) l-D,ll-A, III-B, IV-C
(c) l-A, II-C, III-B, IV-D
(d) l-C, II-B, III-A, IV-D

Question- Which of the following is true?
(A) The biological wealth of our plant has been declining rapidly and the accusing finger is clearly pointing to humai activities
(B) The colonisation of tropical pacific Island by humans is said to have led to the extinction of more than 2,00( species of native bird
(C) The IUCN Red list (2004) documents the extinction of 784 species in last 500 years
(a) A, B and C is correct
(b) A and B is correct
(c) B and C is correct
(d) A and C is, correct

Question- When a species goes extinct in one area, it is often desirable to reintroduce the species from other populations. A major problem with this approach is that
(a) genetic diseases can easily be introduced when the species is reintroduced.
(b) populations are often adapted to local conditions and may not survive when moved to a different location.
(c) the community will have adapted to the extinct species’ absence. Reproduction may seriously disrupt the community.
(d) it is difficult to get an adequate sample of individuals to properly reestablish the population.

Question- The devastation due to hoods in uttarakhand in June 2013 was due to-
(a) Increased deforestation
(b) Collection of moisture and increased cloud formation over the invers mandakini
(c) Construction of houses and hotels on the river bed
(d) All of the above

Question- Tadoba national park in situated in-
(a) Madhya Pradesh
(b) West Bengal
(c) Kerala
(d) Maharashtra

Question- Which of the following is not currently a major cause of species extinctions?
(a) Habitat destruction
(b) Climate change
(c) Overexploitation
(d) Introduction of predators

Question- Column I                          Column II
I. Term biodiversity                       (A) Edward Wilson
II. in situ conservation                  (B) Co-extinction
III. Plant pollination                      (C) On-site conservation
IV. Ex-situ conservation                 (D) Offsite conservation
(a) l-B, II- A, SII-D, IV-C
(b) l-D, IS-A, III-B, IV-C
(c) l-A, II-C, III-B, SV-D
(d) i-B,II-A,m-C,IV-D

Question- Which of the following is not a reason to protect biodiversity ?
(a) The aesthetic value
(b) Because of mutualistic relationships, whole communities could be endangered by the extinction of one species.
(c) Important medicinal compounds can be found only in certain species.
(d) None of the above

Question- Which of the following methods could be used to restore a population of animals from a few male and female individuals.
(a) Cross breeding
(b) Interbreeding
(c) Captive breeding
(d) Selective breeding

Question- Red data book deals with-
(a) Enderive plants
(b) Plants sharing photoperiodism
(c) Plants on the verge of extinction
(d) None

Question- Amazon rain forests are considered as lungs of the planet as they contribute ______ of the total oxygen in th earth’s atmosphere.
(a) 10%
(b) 15%
(c) 20%
(d) 30%

Question- How many percent of the earth’s land area is covered by all the biodiversity hotspots.
(a) More than two percent
(b) Less than two percent
(c) More than five percent
(d) Less than ten percent

Question- Which of the following of false?
(a) Species diversity — The Western Ghats have lesser amphibian species diversity than the Eastern Ghats
(b) Ecological diversity—At the ecosystem level, India, for instance, with its deserts, rain forests, Mangrooves, Coral reef
(c) It has taken million of year of evolution, to accumulate this rich diversity in nature
(d) Biodiversity and its conservation are now vital environmental issues of international concern as more and more people around the world begin to re se the critical importance of diversity.

Question- Introduction of en species into new area possess a threat to extinction of indigenous species due to
(a) Their high nutrient requirement
(b) Their symbiotic relationship
(c) Absence of its natural predator
(d) More intraspecific competition

Question- Which of the following is correct? ,
(A) Three of the hotspot — Western Ghats and Sri Lanka, Indoburma and Himalaya cover our country’s exceptionally high biodiversity region
(B) India now has 14 biosphere reserves, 90 national parks and 448 wildlife sancturies
(C) Ex situ conservation — In this approach, threatened animals and plants are taken out from their natural habitat and placed in special setting
(a) A, B and C is correct
(b) A, B is correct
(c) B and C is correct
(d) A, C is correct

Question- There are genetic variation shown by medicinal plant Rauwolfia vomitoria. This plant growing in which one of the following regions
(a) Deccan Peninsula
(b) Gangatic plains
(c) Himalayan, ranges
(d) North-East

Question- In the formula logs = Log C + Z log A, Ecologist have discovered that the value of z lies in the range of
(a) 0.1 to 0.5
(b) 0.5to1
(c) 0.1 to 0.2
(d) 1 to 5

Question- If the Bengal tiger becomes extinct-
(a) Hyaenas and Wolves will become scarce
(b) The wild Oveas will be safe for man and domestic animals
(c) It-s gene pool will be lost forever
(d) The population of beautiful animals like deers will be stabilized.

Question. Conservation of organisms in natural habitat is called         
(a) ex situ conservation
(b) in situ conservation
(c) both (a) and (b)
(d) none of these.

Question. Western Ghats have a large number of plant and animal species that are not found anywhere else. Which of the following terms will you use to notify such species?         
(a) Endemic
(b) Vulnerable
(c) Threatened
(d) Keystone

Question. Which is the National Aquatic Animal of India?         
(a) Blue whale
(b) Sea-horse
(c) Gangetic shark
(d) River dolphin

Question. The organisation which publishes the Red list of species is         
(a) ICFRE
(b) IUCN
(c) UNEP
(d) WWF.

Question. In IUCN Red List (2004) documents the extinction of 784 species includes         
(a) 335 vertebrates, 360 invertebrates and 89 plants
(b) 337 vertebrates, 362 invertebrates and 88 plants
(c) 338 vertebrates, 359 invertebrates and 87 plants
(d) 340 vertebrates, 357 invertebrates and 87 plants.

Question. Which of the following is the most important for animals and plants being driven to extinction?         
(a) Alien species invasion
(b) Habitat loss and fragmentation
(c) Drought and floods
(d) Economic exploitation

Question. One of the chief reasons among the following for the depletion in the number of species making it endangered is         
(a) over-hunting and poaching
(b) greenhouse effect
(c) competition and predation
(d) habitat destruction.

Question. Which one of the following is not a method of in situ conservation of biodiversity ?         
(a) Sacred grove
(b) Biosphere reserve
(c) Wildlife sanctuary
(d) Botanical garden

Question. Identify the ecologist from the given hints.         
(i) He carried out long-term ecosystem experiments using outdoor plots.
(ii) In his experiments he showed that “increased diversity contributed to higher productivity”.
(a) Ahmed Khan
(b) David Tilman
(c) Stanley Cohen
(d) Ernest Chain

Question. Species area relationship curve had been proposed by         
(a) David Tilman
(b) Edward Wilson
(c) Paul Ehrlich
(d) von Humboldt.

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