MCQ Question for Class 12 Biology Chapter 15 Biodiversity and Conservation

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Biodiversity and Conservation Class 12 Biology MCQs Questions with Answers

Refer below for MCQ Class 12 Biology Chapter 15 Biodiversity and Conservation with solutions. Solve questions and compare with the answers provided below

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. The relation between species richness and area is described on a logarithmic scale by the
equation_____ [where S = species richness, A = area, Z = slope of the line (regression coefficient),
C= Y-intercept].
(a) log S = log C – Z log A
(b) log S = Z log A
(c) log S = log C + Z log A
(d) log S = log C

Question. Decline in the population of indian native fishes due to introduction of Clarias gariepinus in river Yamuna can be categorised as
(a) co-extinction
(b) habitat fragmentation
(c) over exploitation
(d) alien species invasion.

Question. Red list contains data or information of
(a) all economically important plants
(b) plants whose products are in international trade
(c) threatened species
(d) marine vertebrates only.

Question. With respect to Eichhornia:
Statement X : It drains off oxygen from water and is seen growing in standing water.
Statement Y : It is an indigenous species of our country.
(a) Only statement X is correct and Y is wrong.
(b) Both statements X and Y are correct.
(c) Only statement Y is correct and X is wrong.
(d) Both statements X and Y are wrong.

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

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 is referred to as ‘Lungs of the Planet Earth’?
(a) Western Ghat
(b) Lake Victoria
(c) Greenland
(d) Amazon rainforest

Question. The Earth Summit held in Rio de Janeiro in 1992 was called
(a) for immediate steps to discontinue use of CFCs that were damaging the ozone layer
(b) to reduce CO₂ emissions and global warming
(c) for conservation of biodiversity and sustainable utilization of its benefits
(d) to assess threat posed to native species by invasive weed species.

Question. Pollen grains can be stored for several years in liquid nitrogen having a temperature of
(a) –120°C
(b) –80°C
(c) –196°C
(d) –160°C.

Question. Which one of the following is related to ex-situ conservation of threatened animal and plants?
(a) Biodiversity hotspots
(b) Amazon rainforest
(c) Himalayan region
(d) Wildlife safari parks

Question. How many hotspots of biodiversity in the world have been identified till date by Norman Myers?
(a) 17
(b) 25
(c) 34
(d) 43

Question. World summit on sustainable development was held in
(a) 2002
(b) 1990
(c) 1960
(d) 1970.

Question. Which one of the following is not an in situ conservation method?
(a) National parks
(b) Wild life sanctuary
(c) Biosphere reserves
(d) Zoological parks

Question. Which of the following is not an ex-situ conservation?
(a) Cryopreservation
(b) Seed bank
(c) Biosphere reserves
(d) Botanical garden

Question. The trees occurring in two seasons is the characteristic feature of     
(a) temperate deciduous forest
(b) tropical savannah
(c) grassland
(d) coniferous forest

Question. Which of the following regions of the globe exhibits highest species diversity?   
(a) Western Ghats of India
(b) Madagascar
(c) Himalayas
(d) Amazon forests

Question. Which of the following is the most serious threat to biodiversity?     
(a) Competition from exotic species
(b) Commercial harvesting
(c) Habitat loss
(d) Overexploitation

Question. The species confined to a particular region and not found elsewhere is termed as   
(a) endemic
(b) rare
(c) keystone
(d) alien.

Question. Which one of the following is a pair of endangered species?   
(a) Garden lizard and Mexican poppy
(b) Rhesus monkey and sal tree
(c) Indian peacock and carrot grass
(d) Hornbill and Indian aconite

Question. Which one of the following have the highest number of species in nature?   
(a) Fungi
(b) Insects
(c) Birds
(d) Angiosperms

Question: What is common to Lantana, Eichhornia and African catfish?
a) All the species are neither threatened nor indigenous species of India.
b) All are mammals found in India.
c) All are key stone species
d) All are endangered species of India

Question. Which one of the following is not included under in situ conservation?     
(a) National park
(b) Sanctuary
(c) Botanical garden
(d) Biosphere reserve

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: Which of the following group of plants exhibit more species diversity?   
a) Fungi
b) Bryophytes
c) Algae
d) Angiosperms

Question. Genetic diversity in agricultural crops is threatened by 
(a) introduction of high yielding varieties.
(b) intensive use of fertilizers.
(c) extensive intercropping.
(d) intensive use of biopesticides.

Question. From origin of life to its diversification on earth, there have occurred following number of episodes of mass extinction.     
(a) Two 
(b) Three
(c) Four
(d) Five

Question. Which one of the following is not used for ex-situ plant conservation? 
(a) Shifting cultivation
(b) Botanical gardens
(c) Field gene banks
(d) Seed banks

Question. Occurrence of endemic species in South America and Australia is due to 
(a) these species has been extinct from other regions
(b) continental separation
(c) there is no terrestrial route to these places
(d) retrogressive evolution.

Question. Renewable source of energy is     
(a) biomass
(b) coal
(c) petroleum
(d) kerosene

Question. Which part of the world has a high density of organism? 
(a) Deciduous forests
(b) Grasslands
(c) Tropical rain forests
(d) Savannahs

Question: What is common to the following plants: Nepenthes, Psilotum, Rauwolfia and Aconitum?     
a) All are prone to over exploitation
b) All are phylogenic link species
c) All are ornamental plants
d) All are exclusively present in the Eastern Himalayas

Question. In your opinion, which is the most effective way to conserve the plant diversity of an area?   
(a) By tissue culture method
(b) By creating biosphere reserve
(c) By creating botanical garden
(d) By developing seed bank

Question. Alexander von Humboldt described for the first time     
(a) laws of limiting factor
(b) species area relationships
(c) population growth equation
(d) ecological biodiversity.

Question. Select the correct statement about biodiversity.
(a) The desert areas of Rajasthan and Gujarat have a very high level of desert animal species as well as numerous rare animals.
(b) Large scale planting of Bt cotton has no adverse effect on biodiversity.
(c) Western ghats have a very high degree of species richness and endemism.
(d) Conservation of biodiversity is just a fad pursued by the developed countries.

Question. A tree species in Mauritus failed to reproduce because of the extinction of a fruit-eating bird. Which one of the following was that bird?   
(a) Dove
(b) Dodo 
(c) Condor
(d) Skua

Question. Largest amount of fresh water is found in   
(a) lakes and streams
(b) underground
(c) polar ice and glaciers
(d) rivers

Question. Which one of the following is related to ex-situ conservation of threatened animals and plants? 
(a) Biodiversity hotspots
(b) Amazon rainforest
(c) Himalayan region
(d) Wildlife safari parks

Question. MAB stands for     
(a) mammals and biosphere
(b) mammals and biology programme
(c) man and biology programme
(d) man and biosphere programme.

Question. The Indian rhinoceros is a natural inhabitant of which one of the Indian states?   
(a) Uttarakhand
(b) Uttar pradesh
(c) Himachal Pradesh
(d) Assam

Question. Which one of the following is an example of ex-situ conservation?
(a) Wildlife sanctuary
(b) Seed bank
(c) Sacred groves
(d) National park

Question: Which of the following is not a cause for loss of biodiversity?   
a) Keeping animals in zoological parks
b) Invasion by alien species
c) Destruction of habitat
d) Over-exploitation of natural resources

Question. Which of the following is the most important cause of animals and plants being driven to extinction?     
(a) Habitat loss and fragmentation
(b) Co-extinctions
(c) Over-exploitation
(d) Alien species invasion

Question. The largest Tiger reserve in India is     
(a) Nagarhole
(b) Valmiki
(c) Nagarjunsagar-Srisailam
(d) Periyar

Question. One of the endangered species of Indian medicinal plants is that of     
(a) Ocimum
(b) garlic
(c) Nepenthes
(d) Podophyllum. 

Question. Flamingoes breed in     
(a) Rann of Kutch
(b) Chilka lake
(c) Sambhar lake
(d) Lake Mansarover

Question. Which of the following represent maximum number of species among global biodiversity?   
(a) Fungi
(b) Mosses and Ferns
(c) Algae
(d) Lichens

Question. In your opinion, which is the most effective way to conserve the plant diversity of an area?   
(a) By tissue culture method
(b) By creating biosphere reserve
(c) By creating botanical garden
(d) By developing seed bank

Question. The abundance of a species population, within its habitat, is called 
(a) relative density
(b) regional density
(c) absolute density
(d) niche density.

Question. Which of the following is the matching pair of a sanctuary and its main protected wild animal?   
(a) Kaziranga-Musk deer
(b) Gir-Lion
(c) Sunderban-Rhino
(d) All of these

Question.Which type of living organisms given below are listed in Red Data Book”?   
(a) Rare species
(b) Rare and endangered species
(c) Endangered species
(d) None of these

Question.One endangered species of Indian medicinal plants is that of 
(a) Podophyllum
(b) Ocimum
(c) Garlic
(d) Nepenthes

Question. World Summit on Sustainable Development (2002) was held in   
(a) Argentina
(b) South Africa
(c) Brazil
(d) Sweden.

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

Question. Which endangered animal is the source of the world’s finest, lightest, warmest and most expensive wool – the shahtoosh? 
(a) Nilgai
(b) Cheetal
(c) Kashmiri goat
(d) Chiru

Question. The species diversity of plants on earth will be         
(a) 2.4% “
(b) 22%
(c) 8.1%
(d) 85%

Question. Alexander von Humboldt described for the first time         
(a) laws of limiting factor
(b) species area relationships
(c) population growth equation
(d) ecological biodiversity

Question. Decline in the population of indian native fishes due to introduction of Clarias gariepinus in river Yamuna can be categorised as         
(a) co-extinction
(b) habitat fragmentation
(c) over exploitation
(d) alien species invasion.

Question. Choose the right one which denotes genetic diversity.         
(a) Chromosomes → Nucleotides → Genes → Individuals → Populations
(b) Populations → Individuals → Chromosomes → Nucleotides → Genes
(c) Genes → Nucleotides → Chromosomes → Individuals → Populations
(d) Nucleotides → Genes → Chromosomes → Individuals → Populations

Question. Read the statements regarding a stable community and choose the correct option.         
(i) Must be resistant to occasional disturbances.
(ii) Should show much variation in productivity from year to year.
(iii) Must be resistant to invasions by alien species.
(a) (i) and (ii) are correct.
(b) (i), (ii) and (iii) are correct.
(c) (ii) and (iii) are correct.
(d) (i) and (iii) are correct.

Question. World summit on sustainable development was held in         
(a) 2002
(b) 1990
(c) 1960
(d) 1970.

Question. Given below is the representation of the extent of global diversity of vertebrates. What groups does the portions represent?

 

Question. With respect to Eichhornia:         
Statement X : It drains off oxygen from water and is seen growing in standing water.
Statement Y : It is an indigenous species of our country.
(a) Only statement X is correct and Y is wrong.
(b) Both statements X and Y are correct.
(c) Only statement Y is correct and X is wrong.
(d) Both statements X and Y are wrong.

Question. A species facing extremely high risk of extinction in the immediate future is called          
(a) vulnerable
(b) endemic
(c) critically endangered
(d) extinct.

Question. Which of the following is not an ex-situ conservation?         
(a) Cryopreservation
(b) Seed bank
(c) Biosphere reserves
(d) Botanical garden

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