MCQ Chapter 15 Biodiversity and Conservation Class 12 Biology

Please refer to Biodiversity and Conservation MCQ Questions Class 12 Biology below. These MCQ questions for Class 12 Biology with answers have been designed as per the latest NCERT, CBSE books, and syllabus issued for the current academic year. These objective questions for Biodiversity and Conservation will help you to prepare for the exams and get more marks.

Biodiversity and Conservation MCQ Questions Class 12 Biology

Please see solved MCQ Questions for Biodiversity and Conservation in Class 12 Biology. All questions and answers have been prepared by expert faculty of standard 12 based on the latest examination guidelines.

MCQ Questions Class 12 Biology Biodiversity and Conservation

Question- Conservation hotspots are best described as
(a) areas with large numbers of endemic species that are disappearing rapidly.
(b) areas where people are particularly active supporters of biological diversity.
(c) islands that are experiencing high rates of extinction.
(d) areas where native species ate being replaced with introduced species.

Question- Which species is most likely to-be positively selected by natural selection?
(a) One with a large gene pool
(b) One with a medium gene pool
(c) One with a small gene pool
(d) No correlation exists between gene pool and natural selection

Question- Which one of the following are two hot spots of biodiversity in India?
(a) Western ghats & North eastern Himalayas
(b) Deccan and Western Ghats
(c) Himalayan and Deccan Plateau
(d) Western Ghats and Gangetic Plains

Question- Which one of the following in a pair of Endangered species ?
(a) Garden lizard and maxican poppy
(b) Rhesus monkey and sal tree
(c) Indian peacock and cannot glass
(d) flornbill and Indian aconite

Question- What is the approximate percentage of the earth covered by terrestrial hot spots?
(a) 1.5% (less than 2%)
(b) 2.5%
(c) 3.5%
(d) 4.5%

Question- As estimated by Robert May, what is the total number of species present on earth?
(a) 3 million
(b) 5 million
(c) 7 million
(d) 9 million

Question- Which of the following phyla has largest number of species?
(a) Arthropoda
(b) Echinodermata
(c) Cephalochordata
(d) Annelida

Question- Historically, island species have tended to become extinct faster than species living on a mainland. Which of the following reasons can not be used to explain this phenomenon?
(a) Island species have often evolved in the absence of predators and have no natural avoidance strategies.
(b) Humans have introduced diseases and competitors to islands, which negatively impacts island populations.
(c) Island populations are-usually smaller than mainland populations.
(d) Island populations are usually less fit than mainland populations.

Question- What is the affect of species diversity, as one moves from high to low altitudes.
(a) Increases
(b) Decreases
(c) First increases then decreases
(d) First decreases then increases

Question- How much of the Earth’s land surface have humans disturbed or degraded?
(a) 60-70%
(b) 5-10%
(c) 30-40%
(d) 10-20%

Question- What is Biodiversity referred to as?
(a) species in a region
(b) genes & species in a region
(c) Genetic, species & ecological diversity in a region
(d) Genes and species in an ecosystem

Question- What is the decreasing order of number of animal species, as far as India is concerned?
(a) Mammals, Aves, Reptiles, Amphibia
(b) Aves, Reptiles, Mammals, Amphibia
(c) Mammals, Reptiles, Amphibia, Aves
(d) Reptiles, Amphibia, Mammals, Aves

Question- According to the concept of species area relations –
(a) The number of species in an area increases with the size of the area.
(b) Larger species require larger habitat areas than do smaller snecies.
(c) Most species within any given area are endemic.
(d) The larger the area, the greater the extinction rate.

Question- Wild life is destroyed mostly by-
(a) Lack of proper care
(b) Mass scale Hurting
(c) Destruction of natural Habitats
(d) Natural calamity

Question- Troublesome American water used weed found in India is-
(a) Trapa
(b) Cyperus
(c) Typha
(d) Eichormia

Question- Which of the following is NOT associated with small populations?
(a) Homozygosity can increase the fitness of individuals.
(b) Some degree of inbreeding becomes inevitable.
(c) Genetic drift can quickly eliminate most alleles, leaving individuals extremely similar genetically. ‘ ‘
(d) Problems arise when a!!e!ic diversity is reduced.

Question- Where was the World Summit on Sustainable Development held?
(a) South Africa
(b) U.S.A.
(c) South Korea
(d) U.K.

Question- Which of the following is incorrectly matched?
(a) alpha diversity – number of species in a given habitat
(b) genetic diversity – variation of genes within species
(c) beta-diversity – diversity of habitat in the whole region
(d) species diversify-product of species richness & evenness

Question- The lion-tailed mankeys macaca silenus are found only in-
(a) Kaziranga
(b) Eastern ghats and Chennai
(c) Western ghats including travancore and Mysore
(d) Himalayas

Question- Which of the following is NOT a benefit.that humans receive from a biologically diverse world?
(a) source of medicine
(b) source of water
(c) source of economic gains
(d) source of food

Question- Which species is most likely to-be positively selected by natural selection?
(a) One with a large gene pool
(b) One with a medium gene pool
(c) One with a small gene pool
(d) No correlation exists between gene pool and natural selection

Question- Threats to biodiversity comes from –
(a) habitat loss
(b) Over exploitation
(c) Intensive agriculture
(d) AII

Question- Species diversity _____ as we move away from the equator towards the poles.
(a) Increases
(b) Decreases
(c) First increases then decreases
(d) First decreases then increases

Question- Which of the following countries has the most deforestation today?
(a) Brazil
(b) United States
(c) Japan
(d) none of the above

Question- Which of the following was the first National Park of India?
(a) Corbett
(b) Nanda Devi
(c) Kaziranga
(d) Jaldapara

Question- The narrowly utilitarian arguments for conserving include which of the following from the given list? (i) Industrial products like dyes, lubricants, (ii) Ecosystem services like photosynthesis, (iii) Pollinators layer of bees, birds and bats, (iv) Firewood, fibre and construction material, (v) The aesthetic pleasure of walking through thick, (vi) Products of medicinal importance, (vii) Watching spring flowers in full bloom, (viii) Our moral duty to care for the well-being of each species.
(a) (i), (ii), (v) and (vii)
(b) (ii), (iii), (v) and (vii)
(c) (i), (iv) and (vi)
(d) (iii), (v), (vii) and (viii)

Question- A. More than 70 percent of all the species recorded are animals.
B. Out of every 10 animals on this planet, 7 are insects.
C. The number of fungi species in the world is more than the combined total of the species of fishes, amphibians,reptiles and mammals.
D. Number of fishes is very less than that of mammals.
(a) All correct
(b) All incorrect
(c) A, B and C are correct
(d) Only D is correct

Question- In island biogeography, c =
(a) number of species
(b) a constant measuring the slope of the line
(c) a constant measuring number of species per unit area of habitat
(d) area

Question- Ex situ strategies include –
A. Botanical garden B. Zoos
C. Seed / Pollen banks D. Gene bank and tissue culture
(a) A,B
(b) A, B,C
(c) B, C, D
(d) A, B, C, D

Question- What are the total number of hot spots present in the world?
(a) 25
(b) 29
(c) 34
(d) 39

Question- Why are conservationists calling for immediate, and often expensive, action on behalf of endangered species an habitats?
(a) Biodiversity is beneficial to humans.
(b) Man has brought on climate change.
(c) Extinction is an unnatural process.
(d) It would be more costly, financially, if we did not act.

Question- Breeding place of Flamingo (Hansawar) in India is-
(a) Sambhar lake
(b) Chilka lake
(c) Runn of Kutch
(d) Ghana vihar

Question- What is sustainable use?
(a) The study of methods to help protect biodiversity.
(b) Protected strips of land that allow organisms to migrate from one wilderness, area to another.
(c) A law that makes it illegal to do harm to species that are listed as endangered or threatened.
(d) The ability to use natural resources in a way that helps people and protects the ecosystem.

Question- According to conservation biologists, how much of the Earth’s land surface should be strictly protected?
(a) 25%
(b) 5%
(c) 50%
(d) 10%

Question- Which of the foiiowing is not an example of in-situ conservation?
(a) Biosphere Reserves
(b) National Parks
(c) Wildlife Sanctuaries
(d) Zoos and botanical gardens

Question- The term “The Evil Quartet” is related with
(a) four major causes of forest loss
(b) four major causes of population explosion
(c) four major causes of air pollution
(d) four major causes ef biodiversity losses

Question- When the last member of a particular species dies, the species is said to be ______.
(a) isolated
(b) endangered
(c) diversified
(d) extinct

Question- Biosphere reserves differ from national packs and wild life sanctuaries because in the former-
(a) Human beings are not allowed to enter
(b) People are an integral part of the system
(c) Plants are paid greater attention than the animals
(d) Living organisms are groupht from all over the world and preserved for posterity

Question- Which of the following phyla has largest number of species?
(a) Arthropoda
(b) Echinodermata
(c) Cephalochordata
(d) Annelida

Question- The ____ encourages the division of protected areas into zones with different purposes and levels of human impact.
(a) Man and Biosphere Program (MAB)
(b) Biosphere Reserve
(c) ChipkoAndolan Movement
(d) IUCN world conservation strategy

Question- Which of these statements is true?
(a) Biodiversity tends to increase as you get closer to the equator
(b) Tropical regions of Earth contain very few of the world’s land species.
(c) Coral reefs tend to be less biologically diverse than temperate deciduous forests.
(d) Cold climates have greater amounts of biodiversity than warm climates.

Question- A keystone species is one that
(a) has a higher likelihood of extinction than a nonkeystone species.
(b) exerts a strong influence on an ecosystem.
(c) causes other species to become extinct.
(d) has a weak influence on an ecosystem.

Question- The major extinct from India in-
(a) Cannibalism
(b) Felling tress
(c) Habitat destruction
(d) None of these

Question- What is the difference between; a threatened species and an endangered species ?
(a) A threatened species is already extinct. An endangered species means that the population’s numbers have increased greatly over the last 5 years.
(b) A threatened species and an endangered species are the same thing.
(c) A threatened species means that the population is likely to become endangered. An endangered species is already extinct.
(d) A threatened species means that the population is likely to become endangered. An endangered species has population numbers so low that it is likely to become extinct.

Question- The numbers of National Parks, Biosphere and Wildlife sanctuaries of India were:
(a) 90,14,448
(b) 158,62, 10
(c) 58, 412, 10
(d) 96, 412, 10

Question- Commercial latex in obtained from-
(a) Euphorbioceal
(b) Acaria anobica
(c) Tectona grand’s
(d) Marilot esculerta

Question- An endemic species is
(a) one found in many different geographic areas.
(b) one found naturally in just one geographic area,
(c) one found only on islands.
(d) one that has been introduced to a new geographic area.

Question- Most large whale species have been driven to the brink of extinction. Which of the following is the most accepted explanation for this situation?
(a) Overexploitation
(b) habitat loss
(c) pollution
(d) competition from introduced species

Question- In which part of biosphere reserves human settlement is permissible?
(a) Buffer Zone
(b) Transition Zone
(c) Core Zone
(d) Settlement not allowed

Question- An exotic species that is introduced to a new area, spreads rapidly and eliminates native species is called
(a) an immigrant species
(b) an invasive species
(c) destructive species
(d) none

Question- Idri Idri is found is-
(a) Australia
(b) Madagascar
(c) Mauritius
(d) Tasmania

Question- The impacts of loss of biodiversity include –
A. Decrease in plant production.
B. Lowered resistance to environmental perturbation
C. Increased variability in ecosystem processes like water use, pest / disease cycle, plants productivity.
D. None
(a) A, B
(b) A, B, C
(c) B, C
(d) D

Question- Identify the odd combination of the habitat and the particular animal concerned.
(a) Sunderbans______ Bergal tiger
(b) Periyar______Elephant
(c) Rann of kutch______wwil Ass
(d) Dachigam national park______Snao leopard

Question- Which of the following is not the example of recent extinction
(a) Steller’s sea cow
(b) Dodo
(c) Quagga
(d) Pigeon

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- Amazon rain forest, called the ‘Lungs of the Planet’, contribute following percentage of oxygen by photosynthesis, to earth atmosphere
(a) 20%
(b) 35%
(c) 42%
(d) 50%

Question- The Cichlid species of Lake Victoria were driven to, or nearly to, extinction by the introduction of _________.
(a) North American sturgeon
(b) Nile perch
(c) Eels
(d) Bass

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- Which of the following is not the approach for in-situ conservation ?
(a) Biosphere reserve
(b) Sanctuary
(c) Wild life safari park
(d) Sacred groove

Question- Which of the following is considered a hot-spot of biodiversity in India?
(a) Indo-Gangetic Plain
(b) Eastern Ghats
(c) Aravalli Hills
(d) Western Ghats

Question- Endemic plants and animals are those which are
(a) cosmopolitan in distribution.
(b) restricted to certain area.
(c) found in arctic region.
(d) gregarious in habit.

Question- The total number of national parks and sanctuaries in India are
(a) 82 national parks and 410 sanctuaries.
(b) 83 national parks and 421 sanctuaries.
(c) 85 national parks and 450 sanctuaries.
(d) 87 national parks and 460 sanctuaries.

Question- In cryopreservation germplasm is maintained at
(a) – 196° F
(b) 0° F
(c) – 100° F
(d) none of these

Question-Which is not a v d reason for the species-area relationship?
(a) larger areas have higher z values
(b) extinction rates are greater on small islands
(c) larger “core” areas 
(d) larger areas contain more habitats