SSC Ecology And Environment Sample Paper

done NCERT Sample Paper-3 Total Questions - 100    [Download]

• question_answer1)
  Sound above what level is considered to be hazardous noise pollution?
  A)
   Above 150 dB
  done clear
  B)
          above 120 dB
  done clear
  C)
   Above 80 dB
  done clear
  D)
   below 30 dB
  done clear
  View Answer play_arrow

• question_answer2)
  Cannibalism is found in
  A)
   Ants                
  done clear
  B)
   snakes
  done clear
  C)
   Scorpions         
  done clear
  D)
   all of these
  done clear
  View Answer play_arrow

• question_answer3)

  Which one of the following statements about natural gas are true?

  1. Natural gas is the cleanest fossil fuel

  2. Saudi Arabia has the highest natural gas reserves

  3. Methane is the major component of natural gas

  4. The natural gas is the product of tiny plants and animals of past ages.

  Select the correct answer using the codes given below:

  A)
   1 and 4
  done clear
  B)
   2 and 3
  done clear
  C)
   1, 2 and 3        
  done clear
  D)
   1, 3 and 4
  done clear
  View Answer play_arrow

• question_answer4)
  Melanin protects us from
  A)
   X-rays 
  done clear
  B)
   UV-rays
  done clear
  C)
   IR-rays
  done clear
  D)
   c-rays
  done clear
  View Answer play_arrow

• question_answer5)
  The study of population is called
  A)
   Cytology          
  done clear
  B)
   dermatology
  done clear
  C)
   Gerontology     
  done clear
  D)
   taxonomy
  done clear
  View Answer play_arrow

• question_answer6)
  The most important source of soil pollution of soil is
  A)
   Plastics
  done clear
  B)
   detergents
  done clear
  C)
   Iron junks
  done clear
  D)
   glass junks
  done clear
  View Answer play_arrow

• question_answer7)
  The major pollutants to deplete ozone are
  A)
   chlorofluoro carbons
  done clear
  B)
   nitrogen oxides
  done clear
  C)
   Hydrocarbons
  done clear
  D)
   all above
  done clear
  View Answer play_arrow

• question_answer8)
  The niche of a population is the
  A)
   Place where it lives
  done clear
  B)
   Geographical area that it covers
  done clear
  C)
   Set of conditions that it interacts
  done clear
  D)
   set of conditions and resources it uses
  done clear
  View Answer play_arrow

• question_answer9)
  Supersonic jets cause thinning of
  A)
   \[{{O}_{3}}\] Layer     
  done clear
  B)
   \[S{{O}_{2}}\] layer
  done clear
  C)
   \[{{O}_{2}}\] Layer     
  done clear
  D)
   none of the above
  done clear
  View Answer play_arrow

• question_answer10)
  Green-mufler is used against which of the following type of pollution?
  A)
   Air                  
  done clear
  B)
   water
  done clear
  C)
   Soil
  done clear
  D)
   noise
  done clear
  View Answer play_arrow

• question_answer11)
  The pollutants released-by jet planes are
  A)
   fogs                 
  done clear
  B)
   smog
  done clear
  C)
   Colloids           
  done clear
  D)
   aerosols
  done clear
  View Answer play_arrow

• question_answer12)
  An aquatic plant introduced from America to check pollution turned out to be a troublesome weed in Indian water bodies. The name of this 'invasive alien species' is
  A)
   Opuntia           
  done clear
  B)
   Aegilops
  done clear
  C)
   Eichhornia       
  done clear
  D)
   Pistia
  done clear
  View Answer play_arrow

• question_answer13)
  In the coming years, skin related disorders will be more common due to
  A)
   Pollutants in air
  done clear
  B)
   Use of detergents
  done clear
  C)
   Water pollution
  done clear
  D)
          Depletion of ozone layer
  done clear
  View Answer play_arrow

• question_answer14)
  Photochemical smog formed in congested metropolitan cities mainly consists of
  A)
   Hydrocarbons, ozone and \[S{{O}_{2}}\]
  done clear
  B)
   Hydrocarbons, \[S{{O}_{2}}\] and \[C{{O}_{2}}\]
  done clear
  C)
   Smoke, peroxyacetyl nitrate and \[S{{O}_{2}}\]
  done clear
  D)
   Ozone, peroxyacetyl nitrate and \[N{{O}_{X}}\]
  done clear
  View Answer play_arrow

• question_answer15)
  In India, tropical rain forests occur in
  A)
   Jammu Kashmir
  done clear
  B)
   Andamans
  done clear
  C)
  Uttar Pradesh    
  done clear
  D)
   Himachal Pradesh
  done clear
  View Answer play_arrow

• question_answer16)
  Alake, with an inflow of domestic sewage rich in organic waste, may result in
  A)
   Death offish due to lack of oxygen
  done clear
  B)
   Death of the lake very soon due to algal bloom
  done clear
  C)
   Increased production offish due to lot of nutrients
  done clear
  D)
   Increased population of aquatic food web organisms
  done clear
  View Answer play_arrow

• question_answer17)
  A substance, which may alter environmental constituents or cause a pollution is called
  A)
   Pollutant          
  done clear
  B)
   disorder
  done clear
  C)
   Harmful           
  done clear
  D)
   decomposer
  done clear
  View Answer play_arrow

• question_answer18)

  With reference to Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD), consider the following statements:

  1. BOD is a measurement of consumed oxygen by aquatic microorganisms to decompose organic matter.

  2. COD refers to the requirement of dissolved oxygen for the oxidation of organic constituents.

  Which of the statements given above is/are correct?

  A)
   1 only 
  done clear
  B)
   2 only
  done clear
  C)
   Both 1 and 2    
  done clear
  D)
   neither 1 nor 2
  done clear
  View Answer play_arrow

• question_answer19)
  The example of a chemical pollutant is
  A)
   \[N{{O}_{2}}\]
  done clear
  B)
   CO
  done clear
  C)
   DDT                
  done clear
  D)
   phenol
  done clear
  View Answer play_arrow

• question_answer20)
  Which of the following is the main cause of desertification?
  A)
   Tourism
  done clear
  B)
   Irrigated agriculture
  done clear
  C)
   Overgrazing
  done clear
  D)
   Developmental activities
  done clear
  View Answer play_arrow

• question_answer21)
  Groundwater as a water source may be better than surface water because:
  A)
   Groundwater may be naturally purified by percolation through soil.
  done clear
  B)
   Groundwater is a self- replenishing resources that cannot be exhausted.
  done clear
  C)
   Surface water is not naturally self-replenishing.
  done clear
  D)
   Groundwater is more easily, located than surface water.
  done clear
  View Answer play_arrow

• question_answer22)
  Which of the following organisms is used as an indicator of water quality?
  A)
   Baggiota          
  done clear
  B)
   Chiorella
  done clear
  C)
   Azospirillum     
  done clear
  D)
   Escherichia
  done clear
  View Answer play_arrow

• question_answer23)
  Which of the following prevents afforestation in deserts?
  A)
   Low rainfall
  done clear
  B)
   grazing animals
  done clear
  C)
   Planting trees       
  done clear
  D)
        unfertility of soil
  done clear
  View Answer play_arrow

• question_answer24)
  According to red list in India, how many plant species are critically endangered?
  A)
   44                   
  done clear
  B)
   50
  done clear
  C)
   60                   
  done clear
  D)
   80
  done clear
  View Answer play_arrow

• question_answer25)
  Water pollution
  A)
   Decreases turbidity
  done clear
  B)
   Increases oxygenation
  done clear
  C)
   Increases photosynthesis
  done clear
  D)
   Increases turbidity and deoxygenation
  done clear
  View Answer play_arrow

• question_answer26)
  Man and biosphere programme (MAB) was launched by
  A)
   WPSI  
  done clear
  B)
   IUCNNR
  done clear
  C)
   UNESCO         
  done clear
  D)
          WHO
  done clear
  View Answer play_arrow

• question_answer27)
  'Hot spots' of biodiversity means
  A)
   Spots of maximum poaching on earth
  done clear
  B)
   Richest and most threatened reservoir of plant and animal life on earth
  done clear
  C)
   Spots of maximum exotic species
  done clear
  D)
   all of these
  done clear
  View Answer play_arrow

• question_answer28)
  The excessive discharge of fertilizers into water bodies, results in
  A)
   Eutrophication
  done clear
  B)
   Slit formation
  done clear
  C)
   Growth of fish
  done clear
  D)
   Death of hydrophytes
  done clear
  View Answer play_arrow

• question_answer29)
  In summer, in lakes the surface water with high temperature separated from the cold cotton layer by mid water is called
  A)
   epilism
  done clear
  B)
   Thermocline
  done clear
  C)
   Thermal stratification
  done clear
  D)
   metalimnion
  done clear
  View Answer play_arrow

• question_answer30)
  Which of the following pair is mismatched?
  A)
   Solar energy - greenhouse effect
  done clear
  B)
   Biomass burning - release of \[C{{O}_{2}}\]
  done clear
  C)
   Fossil fuel burning - release of \[C{{O}_{2}}\]
  done clear
  D)
   Nuclear power - radioactive wastes
  done clear
  View Answer play_arrow

• question_answer31)
  Which of the following plays a direct role in maintaining the nutrient balance in a biogeochemical cycle?
  A)
   Producers         
  done clear
  B)
   herbivores
  done clear
  C)
   Decomposers    
  done clear
  D)
   consumers
  done clear
  View Answer play_arrow

• question_answer32)

  Earthworms help in improving the soil health by?

  1. Stimulating microbial activity

  2. Mixing up the soil

  3. Decreasing infiltration

  Select the correct answer using the codes given below.

  A)
   1 and 2 only    
  done clear
  B)
   1 and 3 only
  done clear
  C)
   2 and 3 only    
  done clear
  D)
   1, 2 and 3
  done clear
  View Answer play_arrow

• question_answer33)

  Soil acidification can occur due to

  1. Heavy rainfall

  2. Application of fertilizer

  3. Shifting cultivation

  Select the correct answer using the codes given below.

  A)
   1 and 2 only    
  done clear
  B)
   1 and 3 only
  done clear
  C)
   2 and 3 only    
  done clear
  D)
          1, 2 and 3
  done clear
  View Answer play_arrow

• question_answer34)
  Trophic levels are formed by
  A)
   Only plants
  done clear
  B)
   Only animals
  done clear
  C)
   Only carnivores
  done clear
  D)
   Organisms linked in food chains
  done clear
  View Answer play_arrow

• question_answer35)
  Planting of trees on public land is known as
  A)
   Social forestry
  done clear
  B)
          farm forestry
  done clear
  C)
   Agroforestry
  done clear
  D)
   reforestation
  done clear
  View Answer play_arrow

• question_answer36)
  Biosphere includes
  A)
   Lithosphere and ionosphere
  done clear
  B)
   Atmosphere and ionosphere
  done clear
  C)
   Atmosphere and hydrosphere
  done clear
  D)
   Atmosphere, lithosphere and hydrosphere
  done clear
  View Answer play_arrow

• question_answer37)
  The growing human population:
  A)
   Is best addressed by the conversion of ecosystems to more direct human uses.
  done clear
  B)
   Requires the management of ecosystems to better serve the needs of humans.
  done clear
  C)
   Will increase the need for ecosystem services.
  done clear
  D)
   Will require an increase in forests and a decrease in agricultural land.
  done clear
  View Answer play_arrow

• question_answer38)
  Halophytes grow on physiologically dry soil due to the presence of
  A)
   Dry soil
  done clear
  B)
   Excessive salt in plants
  done clear
  C)
   Excessive salt in water
  done clear
  D)
   Excessive humidity outside
  done clear
  View Answer play_arrow

• question_answer39)
  The sphere of living matter together with water, air and soil on earth's surface is called
  A)
   Atmosphere      
  done clear
  B)
   hydrosphere
  done clear
  C)
   Lithosphere      
  done clear
  D)
   biosphere
  done clear
  View Answer play_arrow

• question_answer40)
  Which are the primary constituents of photochemical smog?
  A)
   Hydrocarbons and CFCs
  done clear
  B)
   Carbon dioxide and \[N{{O}_{2}}\]
  done clear
  C)
   \[N{{O}_{2}},\]\[{{O}_{3}}\] and hydrocarbons
  done clear
  D)
   \[S{{O}_{2}}\] and CO
  done clear
  View Answer play_arrow

• question_answer41)
  If the plant producer dies in the ecosystem, then the system
  A)
   Is seriously affected       
  done clear
  B)
   Is hardly affected
  done clear
  C)
   Can produce more food   
  done clear
  D)
   Cannot produce food
  done clear
  View Answer play_arrow

• question_answer42)
  The two 'vegetations' of an ecosystem are separated by
  A)
   ecesis  
  done clear
  B)
   ecoline
  done clear
  C)
   ecotone
  done clear
  D)
   ecosystem
  done clear
  View Answer play_arrow

• question_answer43)
  Carbon dioxide is called green-house gas because it is:
  A)
   Used in green-house to increase plant growth
  done clear
  B)
   Transparent to heat but traps sunlight
  done clear
  C)
   Transparent to sunlight but traps heat
  done clear
  D)
   Transparent to both sunlight and heat
  done clear
  View Answer play_arrow

• question_answer44)
  In a food web, each successive trophic level has
  A)
   Increased total energy
  done clear
  B)
   Less total energy content
  done clear
  C)
   More total energy content
  done clear
  D)
   Non-estimated energy content
  done clear
  View Answer play_arrow

• question_answer45)
  Benthic animals are those, which
  A)
   Are submerged in sea
  done clear
  B)
   Float on the sea' surface
  done clear
  C)
   Are deep dweller in sea
  done clear
  D)
   Are floating (free) organisms
  done clear
  View Answer play_arrow

• question_answer46)
  In context of ecology, the term 'carrying capacity of a species means
  A)
   The highest amount of stress it can withstand.
  done clear
  B)
   Resources that it consumes.
  done clear
  C)
   Its population size that the environment can sustain indefinitely
  done clear
  D)
   None
  done clear
  View Answer play_arrow

• question_answer47)
  The flow of energy in the biosphere is
  A)
   Linear 
  done clear
  B)
   diffuse
  done clear
  C)
   Unidirectional
  done clear
  D)
          multidirectional
  done clear
  View Answer play_arrow

• question_answer48)
  Which one of the following pair is mismatched?
  A)
   Savanna - Acacia
  done clear
  B)
   Prairie - epiphytes
  done clear
  C)
   Tundra - permafrost
  done clear
  D)
   Coniferous forest - evergreen trees
  done clear
  View Answer play_arrow

• question_answer49)
  The term succession was coined by
  A)
   Hult                
  done clear
  B)
   Odum
  done clear
  C)
   King                
  done clear
  D)
   Hodges
  done clear
  View Answer play_arrow

• question_answer50)
  Which one of the following is a correct food chain?
  A)
   Grasshopper - Grass - Snake - Frog - Eagle
  done clear
  B)
   Grass - Grasshopper - Frog - Snake - Eagle
  done clear
  C)
   Eagle - Snake - Grasshopper - Grass - Frog
  done clear
  D)
   Frog - Snake - Eagle - Grasshopper - Grass
  done clear
  View Answer play_arrow

• question_answer51)
  Which of the following has the highest value in a grassland ecosystem?
  A)
   Tertiary production       
  done clear
  B)
   Net production (NP)
  done clear
  C)
   Gross production (GP)    
  done clear
  D)
   Secondary production
  done clear
  View Answer play_arrow

• question_answer52)
  Wild life (Protection) Act 1972 includes which of the following objectives
  A)
   Restriction and Prohibition on hunting of animals
  done clear
  B)
   Setting up and managing sanctuaries and National Parks
  done clear
  C)
   Protection of specified plants
  done clear
  D)
   All the above
  done clear
  View Answer play_arrow

• question_answer53)

  Consider the following statements

  1. As a greenhouse gas (GHG) methane is even more harmful than carbon dioxide

  2. Methane has been included in the list of six GHGs in Kyoto Protocol. Which of the statements given above is/are correct?

  A)
   1 only 
  done clear
  B)
   2 only
  done clear
  C)
   Both 1 and 2    
  done clear
  D)
   neither 1 nor 2
  done clear
  View Answer play_arrow

• question_answer54)

  Who among the following can alter the boundaries of a national park?

  1. Parliament

  2. State legislature

  3. Ministry of environment and forest.

  Select the correct answer using the codes given below.

  A)
   1 and 2 only
  done clear
  B)
   1 and 3 only
  done clear
  C)
   2 only 
  done clear
  D)
   2 and 3 only
  done clear
  View Answer play_arrow

• question_answer55)
  Biological equilibrium is found among
  A)
   Producers and light
  done clear
  B)
   Producers and decomposers
  done clear
  C)
   Producers and consumers
  done clear
  D)
   Producers, consumers and decomposers
  done clear
  View Answer play_arrow

• question_answer56)
  Predation and parasitism are which of the following type of interactions?
  A)
   (+, +) 
  done clear
  B)
   (+, 0)
  done clear
  C)
   \[\left( -,\,\,- \right)\]       
  done clear
  D)
   \[\left( +,\,\,- \right)\]
  done clear
  View Answer play_arrow

• question_answer57)
  The brown haze dome formed in cities is because of which gas?
  A)
   Sulphur dioxide.
  done clear
  B)
   Nitrogen oxide.
  done clear
  C)
   Carbon dioxide.
  done clear
  D)
   Volatile organic compounds (VOCs).
  done clear
  View Answer play_arrow

• question_answer58)
  The sequence of succession is
  A)
   lichen '! Moss '! Grass '! Shrub '! Tree
  done clear
  B)
   Tree '! Shrub '! Lichen '! Moss '! Grass
  done clear
  C)
   Moss '! Shrub '! Tree '! Lichen '! Grass
  done clear
  D)
   Lichens '! Tree '! Moss '! Grass '! Shrub
  done clear
  View Answer play_arrow

• question_answer59)
  Which of the following supports a good population of plankton and littoral vegetation?
  A)
   Oligotrophic
  done clear
  B)
   eutrophic
  done clear
  C)
   lithotrophic       
  done clear
  D)
   agroecotrophic
  done clear
  View Answer play_arrow

• question_answer60)
  Which best describes a desert biome?
  A)
   No rain, pure sand for soil, very hot year-round, flat
  done clear
  B)
   Almost no rain, sand dunes, occasional water holes
  done clear
  C)
   Low rainfall, gravel-clay-sandy soil, hot-to-cold temperatures
  done clear
  D)
   Dry, rocky creek beds, large glacial rocks, severe erosion
  done clear
  View Answer play_arrow

• question_answer61)
  The main cause of water pollution is
  A)
   Industrial wastes
  done clear
  B)
   pesticides
  done clear
  C)
   Fertilizers
  done clear
  D)
   crop residues
  done clear
  View Answer play_arrow

• question_answer62)
  In which of the following population, genetic drift operates
  A)
   Island  
  done clear
  B)
   smaller
  done clear
  C)
   Larger 
  done clear
  D)
   continental
  done clear
  View Answer play_arrow

• question_answer63)
  When acid rain falls on buildings made of marble, what is the final product that flakes off easily?
  A)
   Calcium carbonate
  done clear
  B)
   gypsum
  done clear
  C)
   Dolomite          
  done clear
  D)
   epsom
  done clear
  View Answer play_arrow

• question_answer64)
  Which of the following niches is concerned with the trophic position of an organism?
  A)
   Trophic niche   
  done clear
  B)
   habitat niche
  done clear
  C)
   Spatial niche    
  done clear
  D)
   multifactor niche
  done clear
  View Answer play_arrow

• question_answer65)
  A Inhabitants close to very busy airports are likely to experience health hazards R. Sound level of jet airplanes usually exceeds 150 db
  A)
   A is correct and R is its explanation
  done clear
  B)
   A is correct and R is not its explanation
  done clear
  C)
   A is correct and R is wrong
  done clear
  D)
   A is wrong and R is correct
  done clear
  View Answer play_arrow

• question_answer66)

  Which of the following are correctly matched?

  1. Arsenic poisoning - black-foot disease

  2. Secondary effluent treatment - biological process

  3. Pyrolysis - solid soil waste disposal

  4. Tubifex - water pollution indicator

  5. Bio magnification - degradable pollutants

  A)
   1, 2, 3 and 5    
  done clear
  B)
   1, 3, 4 and 5
  done clear
  C)
   2, 3, 4 and 5    
  done clear
  D)
   1, 2, 3 and 4
  done clear
  View Answer play_arrow

• question_answer67)
  Catalytic converter is involved in the control of
  A)
   Air pollution
  done clear
  B)
   Radioactive pollution
  done clear
  C)
   Sewage and chemical from industry
  done clear
  D)
   Nuclear pollution
  done clear
  View Answer play_arrow

• question_answer68)
  The automobile exhaust interact to produces which of the secondary pollutants?
  A)
   Sulphur dioxide and nitrogen oxide
  done clear
  B)
   Peroxides and PANS
  done clear
  C)
   Benzopyrene and \[S{{O}_{2}}\]
  done clear
  D)
   Hydrocarbons and Nitrogen
  done clear
  View Answer play_arrow

• question_answer69)
  One of the human diseases due to bio magnification of heavy metals is
  A)
   minamata        
  done clear
  B)
   asthma
  done clear
  C)
   Tuberculosis
  done clear
  D)
   elephantiasis.
  done clear
  View Answer play_arrow

• question_answer70)
  Ozone saves the biosphere by absorbing the high energy radiation called
  A)
   infra-red (IR)     
  done clear
  B)
   ultraviolet rays
  done clear
  C)
   X-rays 
  done clear
  D)
   gama rays
  done clear
  View Answer play_arrow

• question_answer71)
  The potent carcinogen located in coal tar exhaust of automobiles and tobacco smoke is
  A)
   Dioxin 
  done clear
  B)
   benzo[a]pyrene
  done clear
  C)
   Both above      
  done clear
  D)
   none above
  done clear
  View Answer play_arrow

• question_answer72)
  Which of the following are non-degradable pollutants?
  A)
   Mercuric salts               
  done clear
  B)
   Long chain phenolics
  done clear
  C)
   DDT                    
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer73)
  Mercury pollution causes
  A)
   Black foot disease
  done clear
  B)
   itai-itai disease
  done clear
  C)
   blue-baby syndrome
  done clear
  D)
   Minamata disease
  done clear
  View Answer play_arrow

• question_answer74)
  Which of the following pollutant increases the hardness of water?
  A)
   \[{{H}_{2}}S{{O}_{4}}\]       
  done clear
  B)
   DDT
  done clear
  C)
   Pb
  done clear
  D)
                      Cu.
  done clear
  View Answer play_arrow

• question_answer75)
  Which one of the following statements pertaining to pollutants is correct?
  A)
   DDT is a non-biodegradable pollutant
  done clear
  B)
   Excess fluoride in drinking water causes osteoporosis
  done clear
  C)
   Excess cadmium in drinking water causes black foot disease
  done clear
  D)
   Methyl mercury in water may cause "Itailtai" Disease
  done clear
  View Answer play_arrow

• question_answer76)
  Ecotone is best defined as:
  A)
   The most extensive ecosystem unit which is convenient to designate.
  done clear
  B)
   The vegetation community developed at the last stage of biotic succession.
  done clear
  C)
   Transition area between two biomes.
  done clear
  D)
   None of the above.
  done clear
  View Answer play_arrow

• question_answer77)
  Biosphere reserves differ from National Parks and Wildlife Sanctuaries because in the former
  A)
   Human beings are not allowed to enter
  done clear
  B)
   People are an integral part of the system
  done clear
  C)
   Plants are paid greater attention than the animals.
  done clear
  D)
   Living organisms are brought from all over the world and preserved for posterity.
  done clear
  View Answer play_arrow

• question_answer78)
  A taxon facing an extremely high risk of extinction in wild in the immediate future is called
  A)
   Critical endangered
  done clear
  B)
   endangered
  done clear
  C)
   Vulnerable       
  done clear
  D)
   extinct in wild
  done clear
  View Answer play_arrow

• question_answer79)
  The soil pollutants that affect the food chain and food web by killing microorganisms and plants are
  A)
   Nitrogen oxides
  done clear
  B)
   pathogens
  done clear
  C)
   Chemical fertilizers
  done clear
  D)
   pesticides
  done clear
  View Answer play_arrow

• question_answer80)

  Which of the following World Heritage Sites is/are also a tiger reserve?

  1. Sundarbans

  2. Nanda Devi

  3. Manas

  4. Kaziranga Select the correct answer using the codes given below.

  A)
   1 and 2 only    
  done clear
  B)
   1 and 3 only
  done clear
  C)
   1 and 4 only    
  done clear
  D)
   1, 3 and 4 only
  done clear
  View Answer play_arrow

• question_answer81)

  Man causes soil erosion through

  1. Use of improper ploughing methods.

  2. Leaving roots of crop in the field after harvest.

  3. Practicing trash farming.

  4. Use of heavy machines.

  Select the correct answer using the codes given below.

  A)
   1, 2 and 3 only 
  done clear
  B)
   1 and 4 only
  done clear
  C)
   1, 3 and 4 only
  done clear
  D)
   1, 2, 3 and 4 only
  done clear
  View Answer play_arrow

• question_answer82)
  In India, the endangered wild dog 'Dhole' is protected under Schedule 2 of the Wild Life (Protection) Act, 1972. Which of the following will be the first zoo in India, to have a conservation breeding centre for the wild dog, 'Dhole'?
  A)
   Nandan kanan Zoological Park
  done clear
  B)
   Assam State Zoo-cum-Botanical Garden
  done clear
  C)
   Alien Forest Zoo
  done clear
  D)
   Indira Gandhi Zoological Park
  done clear
  View Answer play_arrow

• question_answer83)

  Biofuels are fuels extracted from plants and crops and these have various advantages. These include

  1. Increasing agricultural diversity.

  2. Reduced use of fertilizers.

  3. Renewable source of energy.

  Select the correct answer using the codes given below.

  A)
   1 and 3 only    
  done clear
  B)
   3 only
  done clear
  C)
   2 and 3 only    
  done clear
  D)
   1, 2 and 3
  done clear
  View Answer play_arrow

• question_answer84)
  The percentage of land covered by forest is
  A)
   9-18% 
  done clear
  B)
   18-27%
  done clear
  C)
   27-36%
  done clear
  D)
   more than 50%
  done clear
  View Answer play_arrow

• question_answer85)
  Acid Rain is the precipitation that contains high levels of sulphuric acid & nitric acid. Here are names of some buildings which has a link with acid rain?
  A)
   Pisa Tower       
  done clear
  B)
   White House
  done clear
  C)
   Taj Mahal        
  done clear
  D)
   Red Fort
  done clear
  View Answer play_arrow

• question_answer86)

  Consider the following statements about ecosystem stability:

  1. It increases with increase of number of links in the food web.

  2. It increases with the increase in length of food chain. Which of the statements given above is/are correct?

  A)
   1 only 
  done clear
  B)
   2 only
  done clear
  C)
   Both 1 and 2    
  done clear
  D)
   neither 1 nor 2
  done clear
  View Answer play_arrow

• question_answer87)

  With to the IUCN classification, extinct species are those which have been:

  1. Completely eliminated from wild areas.

  2. Completely eliminated from managed areas.

  Which of the statements given above is/are correct?

  A)
   1 only 
  done clear
  B)
   2 only
  done clear
  C)
   Both 1 and 2    
  done clear
  D)
   neither 1 nor 2
  done clear
  View Answer play_arrow

• question_answer88)
  Differentiate between threatened and endangered species.
  A)
   A near threatened species means that population is likely to become threatened and endangered is one where population is so low that it will extinct.
  done clear
  B)
   A near threatened species has decreased only in the last 5 years but endangered is perennial deficit.
  done clear
  C)
   Threatened species are those, who are in danger from human. Whereas endangered species are those who are in threat from ecology itself.
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer89)

  The Great Indian Bustard is a critically endangered species. Its population has been declining due to

  1. Habitat loss

  2. Frequent poaching

  3. Construction of windmills

  Select the correct answer using the codes given below.

  A)
   1 only 
  done clear
  B)
   1 and 2 only
  done clear
  C)
   2 only 
  done clear
  D)
   1, 2 and 3
  done clear
  View Answer play_arrow

• question_answer90)

  Some regions are marked as 'biodiversity hotspots' on account of their endemism and threat. Which of the following regions in India is/are a biodiversity hotspot?

  1. Western Ghats

  2. Eastern Ghats

  3. Eastern Himalayas

  4. Western Himalayas

  Select the correct answer using the codes given below.

  A)
   1 and 2 only    
  done clear
  B)
   1 and 3 only
  done clear
  C)
   1, 2 and 3 only
  done clear
  D)
          2 and 4 only
  done clear
  View Answer play_arrow

• question_answer91)
  Biogeochemical cycling means cycling of
  A)
   Water
  done clear
  B)
   Energy in an ecosystem
  done clear
  C)
   Nutrients in an ecosystem
  done clear
  D)
   Gases between plants and atmosphere
  done clear
  View Answer play_arrow

• question_answer92)
  The earth summit held in Rio de Janerio which resulted in the convention on Biodiversity on 29th December 1993. Its objective is
  A)
   Sustainable use of biodiversity
  done clear
  B)
   Conservation of biological diversity
  done clear
  C)
   Proper fare utilization of genetic resources
  done clear
  D)
   All of above
  done clear
  View Answer play_arrow

• question_answer93)
  In context of environment, the term "dirty dozen" refers to
  A)
   12 most harmful greenhouse gases
  done clear
  B)
   12 ozone depleting substances
  done clear
  C)
   12 persistent organic pollutants
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer94)

  Consider the following statements

  1. Green Power is the electricity produced in an environmentally friendly manner.

  2. Sources of Green power include the sun, wind and water which are pollution free and natural.

  3. India is the 4th largest consumer of energy in the world. Which of the statements given above is/are correct?

  A)
   2 and 3
  done clear
  B)
   1 and 2
  done clear
  C)
   Only 3 
  done clear
  D)
   Only 1
  done clear
  View Answer play_arrow

• question_answer95)
  The term, 'ecosystem' was coined by
  A)
   Odum 
  done clear
  B)
   Tansley
  done clear
  C)
   Richter 
  done clear
  D)
   both [b] and [c]
  done clear
  View Answer play_arrow

• question_answer96)

  Increased level of carbon dioxide in the atmosphere would impact the plants in many ways. These can be:

  1. Decrease in photosynthetic productivity of plants.

  2. Proliferation of weeds.

  3. Increase in number of insects and other pests.

  Select the correct answer using the codes given below;

  A)
   1 and 2 only
  done clear
  B)
   1 and 3 only
  done clear
  C)
   2 and 3 only    
  done clear
  D)
   1, 2 and 3
  done clear
  View Answer play_arrow

• question_answer97)

  With reference to oil spills, consider the following statements:

  1. They make the water deficient in oxygen.

  2. They can cause algal blooms.

  Which of the statements given above is/are correct?

  A)
   1 only 
  done clear
  B)
   2 only
  done clear
  C)
   Both 1 and 2    
  done clear
  D)
   neither 1 nor 2
  done clear
  View Answer play_arrow

• question_answer98)

  Which of the following is/are part of the biosphere?

  1. Water

  2. Soil

  3. Plants

  Select the correct answer using the codes given below.

  A)
   1 and 2 only    
  done clear
  B)
   1 and 3 only
  done clear
  C)
   3 only 
  done clear
  D)
   1, 2 and 3
  done clear
  View Answer play_arrow

• question_answer99)
  Blue-baby syndrome is caused by
  A)
   Cadmium pollution
  done clear
  B)
   Mercury poisoning
  done clear
  C)
   Chronic exposure to arsenic
  done clear
  D)
   Excess nitrate in drinking water
  done clear
  View Answer play_arrow

• question_answer100)
  Very harmful particles for humans present in atmosphere are
  A)
   Lead and arsenic
  done clear
  B)
          Lead and mercury
  done clear
  C)
   Mercury and cadmium   
  done clear
  D)
   Zinc and iron
  done clear
  View Answer play_arrow