SSC Ecology And Environment Sample Paper

done NCERT Sample Paper-5 Total Questions - 100    [Download]

• question_answer1)
  Which of the following is the most sustainable source of water in the face of global warming?
  A)
   Using windmills to generate electricity to desalinate seawater
  done clear
  B)
   Using hydroelectric dams to generate electricity to pump aquifers for irrigation
  done clear
  C)
   Using coal generated electricity to desalinate seawater
  done clear
  D)
   Using natural gas to generate electricity to melt glaciers
  done clear
  View Answer play_arrow

• question_answer2)
  Consequences of ozone depletion
  A)
   Entry of UV-rays in earth's atmosphere
  done clear
  B)
   Various skin troubles-like skin cancer
  done clear
  C)
   Cataract
  done clear
  D)
   All above
  done clear
  View Answer play_arrow

• question_answer3)
  Montreal protocol is related to
  A)
   Ozone depletion
  done clear
  B)
          global warming
  done clear
  C)
   Climatic changes
  done clear
  D)
   biodiversity hot spot
  done clear
  View Answer play_arrow

• question_answer4)
  The noise created at the launching of space rocket measures around
  A)
   100-120 dB      
  done clear
  B)
   130-150 dB
  done clear
  C)
   160-180 dB      
  done clear
  D)
   260-240 dB
  done clear
  View Answer play_arrow

• question_answer5)
  The rocket launching explosion is an example of
  A)
   Soil pollution    
  done clear
  B)
   air pollution
  done clear
  C)
   Water pollution
  done clear
  D)
          noise pollution
  done clear
  View Answer play_arrow

• question_answer6)
  The earth summit at Rio De Janeiro was held in?
  A)
   1991   
  done clear
  B)
   1992
  done clear
  C)
   1993               
  done clear
  D)
   1994
  done clear
  View Answer play_arrow

• question_answer7)

  A lake near a village suffered heavy mortality of fishes within a few days. Consider the following reasons for this?

  [a] Lots of urea and phosphate fertilizer were used in the crops in the vicinity

  [b] The area was sprayed with DDT by an aircraft

  [c] The lake water turned green and stinky

  [d] Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis. Which two of the above were the main causes of fish mortality in the lake?

  A)
   b, c     
  done clear
  B)
   c, d
  done clear
  C)
   a, c     
  done clear
  D)
   a, b
  done clear
  View Answer play_arrow

• question_answer8)
  DDT is a
  A)
   Bio Chemical Pollutant
  done clear
  B)
   Bio Degradable Pollutant
  done clear
  C)
   Non-Bio Degradable Pollutant
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer9)
  The atmospheric pollutant, which is not produced by automobile exhaust is
  A)
   Fly ash
  done clear
  B)
   carbon monoxide
  done clear
  C)
   Sulphur dioxide
  done clear
  D)
   hydrocarbon gases
  done clear
  View Answer play_arrow

• question_answer10)
  Which of the following countries has the highest natural gas reserves?
  A)
   Iran                 
  done clear
  B)
   Qatar
  done clear
  C)
   Russia 
  done clear
  D)
   Saudi Arabia
  done clear
  View Answer play_arrow

• question_answer11)
  Global agreement in specific control strategies to reduce the movements of hazardous waste between nations was adopted by
  A)
   Kyoto Protocol the
  done clear
  B)
   Vienna Convention
  done clear
  C)
   Rio de Janeiro Conference
  done clear
  D)
   None of the Above
  done clear
  View Answer play_arrow

• question_answer12)
  Increase in the concentration of pollutants in higher trophic levels is called
  A)
   Recycling
  done clear
  B)
   eutrophication
  done clear
  C)
   Biodegradation
  done clear
  D)
   bio-magnification
  done clear
  View Answer play_arrow

• question_answer13)
  The Great Barrier Reef along the east coast of Australia can be categorized as:
  A)
   Population       
  done clear
  B)
   Community
  done clear
  C)
   Ecosystem       
  done clear
  D)
   Biome
  done clear
  View Answer play_arrow

• question_answer14)
  The yellowing of leaves and their shedding due to one of these pollutants?
  A)
   Sulphur dioxide
  done clear
  B)
   Oxides of nitrogen
  done clear
  C)
   Carbon monoxide
  done clear
  D)
   none of these
  done clear
  View Answer play_arrow

• question_answer15)
  Global warming is due to increased presence of
  A)
   Ozone layer in the stratosphere
  done clear
  B)
   \[C{{O}_{2}}\] in the earth's atmosphere
  done clear
  C)
   Exhaust particles from automobiles
  done clear
  D)
   Particles from industries
  done clear
  View Answer play_arrow

• question_answer16)
  'Forest that never bums' is
  A)
   Coniferous
  done clear
  B)
   deciduous
  done clear
  C)
   Tundra
  done clear
  D)
   tropical rain forests
  done clear
  View Answer play_arrow

• question_answer17)
  Which of the following is not used for the disinfection of drinking water?
  A)
   Ozone 
  done clear
  B)
   phenyl
  done clear
  C)
   Chlorine           
  done clear
  D)
   chloramine
  done clear
  View Answer play_arrow

• question_answer18)
  When a huge amounts of sewage is dumped into a river, it's BOD
  A)
   Increases          
  done clear
  B)
   decreases
  done clear
  C)
   Sharply decrease
  done clear
  D)
   remains unchanged
  done clear
  View Answer play_arrow

• question_answer19)
  Sardar Sarovar Dam is built in the river
  A)
   Jhelum
  done clear
  B)
   Narmada
  done clear
  C)
   Tapti               
  done clear
  D)
   Vyas
  done clear
  View Answer play_arrow

• question_answer20)
  Match the following items' in column I with column II and choose the correct answer.

  	Column I		Column II
  [A]	Arsenic	1.	Minamata disease
  [B]	Nitrate	2.	Itai- Itai
  [C]	Mercury	3.	Blue-baby syndrome
  [D]	Cadmium	4.	Skeletal fluorosis
  [E]	Fluoride	5.	Black-foot disease

  A)
   A\[\to \]2, B\[\to \]3, C\[\to \]5, D\[\to \]1, E\[\to \]4
  done clear
  B)
   A\[\to \]5, B\[\to \]3, C\[\to \]1, D\[\to \]2, E\[\to \]4
  done clear
  C)
   A\[\to \]3, B\[\to \]4, C\[\to \]5, D\[\to \]1, E\[\to \]2
  done clear
  D)
   A\[\to \]5, B\[\to \]4, C\[\to \]3, D\[\to \]2, E\[\to \]1
  done clear
  View Answer play_arrow

• question_answer21)
  Silence zone is defined as areas up to
  A)
   100 m around such premises as hospitals, educational institutions and Courts
  done clear
  B)
   200 m around such premises as hospitals, educational institutions and Courts
  done clear
  C)
   500 m around such premises as hospitals, educational institutions and courts
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer22)
  Ecotourism throughout the world relies upon:
  A)
   The harvesting and sale of natural products.
  done clear
  B)
   The human desire to collect wildlife products from there out the world.
  done clear
  C)
   Widespread interest in exploring and maintaining natural environments.
  done clear
  D)
   An interest in discovering to create new crops and agriculture products.
  done clear
  View Answer play_arrow

• question_answer23)

  With reference to greenhouse gases, which among the following statements is/are correct?

  1. Greenhouse gases are responsible for global warming

  2. If it was not for greenhouse gases, earth would have been too cold for life to exist

  3. Ozone, Carbon Dioxide and water vapour are greenhouse gases

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

• question_answer24)
  Which of the following does not leave residue in environment?
  A)
   Insect growth regulator
  done clear
  B)
   lonization radiation
  done clear
  C)
   Conjugation technique
  done clear
  D)
   DDT
  done clear
  View Answer play_arrow

• question_answer25)
  The Liquefied Petroleum Gas (LPG) is produced during refining of crude oil, its major components are:
  A)
   Methane and Butane     
  done clear
  B)
   Methane and Ethane
  done clear
  C)
   Propane and Butane      
  done clear
  D)
   Propane and Methane
  done clear
  View Answer play_arrow

• question_answer26)
  The oxides of sulphur and nitrogen are important pollutants of
  A)
   Air                  
  done clear
  B)
   water
  done clear
  C)
   Soil     
  done clear
  D)
   air and water
  done clear
  View Answer play_arrow

• question_answer27)
  Increase in concentration of one of the following immediately affects human beings because it affects \[{{O}_{2}}\] carrying capacity of haemoglobin.
  A)
   \[C{{O}_{2}}\]
  done clear
  B)
   \[S{{O}_{2}}\]
  done clear
  C)
   \[CO\]             
  done clear
  D)
   \[S{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer28)
  The pollutant that directly affects the nervous system is
  A)
   Organophosphates
  done clear
  B)
   DDT
  done clear
  C)
   Aldrin  
  done clear
  D)
   lindane
  done clear
  View Answer play_arrow

• question_answer29)
  Which one of the following is not an example of geoengineering?
  A)
   Injecting sulphate aerosols into the stratosphere
  done clear
  B)
   Erecting large carbon dioxide scrubbers to sequester carbon dioxide in deep reservoirs
  done clear
  C)
   Seeding the oceans with iron to promote the growth of phytoplankton
  done clear
  D)
   Erecting large fields of wind turbines to generate electricity to power automobiles
  done clear
  View Answer play_arrow

• question_answer30)
  Deforestation causes
  A)
   Soil erosion      
  done clear
  B)
   soil pollution
  done clear
  C)
   Water pollution
  done clear
  D)
   noise pollution
  done clear
  View Answer play_arrow

• question_answer31)
  Which of the following is a secondary pollutant?
  A)
   \[S{{O}_{2}}\]            
  done clear
  B)
   \[CO\]
  done clear
  C)
   \[{{O}_{3}}\]              
  done clear
  D)
   \[N{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer32)
  Destruction of chlorophyll of plants, premature leaf fall and yellowing of leaf is caused by excess of in atmosphere
  A)
   \[C{{O}_{2}}\]
  done clear
  B)
   \[S{{O}_{2}}\]
  done clear
  C)
   \[CO\]             
  done clear
  D)
   \[N{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer33)
  Forest destruction results in
  A)
   Soil erosion        
  done clear
  B)
          Loss of wild life
  done clear
  C)
   Famine, floods and drought
  done clear
  D)
   all of these
  done clear
  View Answer play_arrow

• question_answer34)
  Genetic diversity will be more common in organisms with
  A)
   Parthenogenesis
  done clear
  B)
   sexual reproduction
  done clear
  C)
   Asexual reproduction
  done clear
  D)
   parthenocarpy
  done clear
  View Answer play_arrow

• question_answer35)
  Which one of the following is not included under in situ conservation?
  A)
   National park
  done clear
  B)
   Sanctuary
  done clear
  C)
   Botanical garden
  done clear
  D)
   Biosphere reserve
  done clear
  View Answer play_arrow

• question_answer36)

  Consider the following statements:

  1. The Western Ghats Ecology Expert Panel (WGEEP) headed by Madhav Gadgil, recommended to the Union Ministry of Environment and Forest to provisionally notify the limits of Ecologically Sensitive Zones.

  2. The panel suggested barring Genetically Modified crops, Special Economic Zones and new hill stations across the Western Ghats.

  3. It was suggested that the road and other infrastructural expansion plans should be submitted for Environment Impact Assessment scrutiny by the Urban Local Bodies or Local Planning Authorities before its execution. Which of statements given above is/are true?

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

• question_answer37)
  In which one of the following habitats does the diurnal temperature of soil surface varies the most?
  A)
   Forest  
  done clear
  B)
   desert
  done clear
  C)
   Grassland        
  done clear
  D)
   shrub land
  done clear
  View Answer play_arrow

• question_answer38)
  Chilka lake is situated in one of the following and famous for
  A)
   Tamilnadu, Flamingos   
  done clear
  B)
   Kerala, Elephants
  done clear
  C)
   Orissa, Flamingos
  done clear
  D)
            Karnataka, Flamingos
  done clear
  View Answer play_arrow

• question_answer39)
  Which one of the following is an endangered animal?
  A)
   Rhesus monkey
  done clear
  B)
   Antelope
  done clear
  C)
   Langur
  done clear
  D)
   Lion tailed macaque
  done clear
  View Answer play_arrow

• question_answer40)
  Desert can be converted into green land by planting
  A)
   oxylophytes
  done clear
  B)
   psammophytes
  done clear
  C)
   Halophytes      
  done clear
  D)
   tropical trees
  done clear
  View Answer play_arrow

• question_answer41)
  Bandipur National Park is associated with
  A)
   Elephants         
  done clear
  B)
   tiger
  done clear
  C)
   Rhinoceros       
  done clear
  D)
   deer
  done clear
  View Answer play_arrow

• question_answer42)
  Which one of the following is an example of ex situ conservation?
  A)
   Sanctuary        
  done clear
  B)
   National park
  done clear
  C)
   Biosphere reserve
  done clear
  D)
   Zoo
  done clear
  View Answer play_arrow

• question_answer43)
  What is the 'race to the bottom' approach?
  A)
   An approach which results in the degradation of environmental Standards so that a State gains competitive advantage in the world economic arena
  done clear
  B)
   An approach which asks for the introduction of new environmental standards
  done clear
  C)
   An approach which asks for the increase of funds towards new environmental standards
  done clear
  D)
   An approach which suggests that States around the world should co-ordinate in improving their domestic environmental laws
  done clear
  View Answer play_arrow

• question_answer44)
  The soil, which is carried by air and then deposited, is called
  A)
   Alluvial
  done clear
  B)
   colluvial
  done clear
  C)
   eolian  
  done clear
  D)
   glacial
  done clear
  View Answer play_arrow

• question_answer45)
  For conservation of tiger 'a tiger project' is being run in the country. How many tiger reserves are there under this project?
  A)
   10                   
  done clear
  B)
   14
  done clear
  C)
   12                   
  done clear
  D)
   More than 16
  done clear
  View Answer play_arrow

• question_answer46)
  Eiochomiacrassipesis a
  A)
   Desert plant      
  done clear
  B)
   parasite
  done clear
  C)
   Aquatic plant   
  done clear
  D)
   terrestrial plant
  done clear
  View Answer play_arrow

• question_answer47)
  Shifting cultivation requires
  A)
   Huge amount of commercial fertiliser
  done clear
  B)
   Long time for the regeneration of soil
  done clear
  C)
   Alternate crop pattern on a particular area
  done clear
  D)
   Excessive soil erosion for crop production
  done clear
  View Answer play_arrow

• question_answer48)
  'Central Public Health Engineering Research Institute' is situated at
  A)
   Delhi   
  done clear
  B)
   Bombay
  done clear
  C)
   Nagpur
  done clear
  D)
   Bihar
  done clear
  View Answer play_arrow

• question_answer49)
  It is considered poor man's timber
  A)
   Mango wood    
  done clear
  B)
          bamboo
  done clear
  C)
   Acacia wood    
  done clear
  D)
   eucalyptus wood.
  done clear
  View Answer play_arrow

• question_answer50)
  What will happen, if all the green plants disappear from the earth?
  A)
   All animal will die
  done clear
  B)
   Only carnivores will die
  done clear
  C)
   Only herbivores will die
  done clear
  D)
   It will have no effect on animals
  done clear
  View Answer play_arrow

• question_answer51)
  Which animal has become extinct from India?
  A)
   Snow Leopard
  done clear
  B)
          Hippopotamus
  done clear
  C)
   Wolf
  done clear
  D)
   Cheetah.
  done clear
  View Answer play_arrow

• question_answer52)
  An area which is strictly reserved for the betterment of the wild life and where activities such as forestry grazing or cultivation is allowed is called a
  A)
   Biosphere reserve
  done clear
  B)
   reserved forest.
  done clear
  C)
   Sanctuary        
  done clear
  D)
   national park
  done clear
  View Answer play_arrow

• question_answer53)
  Biological equilibrium is found in
  A)
   Producers and sunlight
  done clear
  B)
   Producers and consumers
  done clear
  C)
   Producers and decomposers
  done clear
  D)
   Producers, consumers and decomposers
  done clear
  View Answer play_arrow

• question_answer54)
  The Siberian Crane, an endangered migratory bird is a regular visitor of which of the following national park/bird sanctuaries:
  A)
   Ranganathittu bird sanctuary
  done clear
  B)
   Keoladeo national park
  done clear
  C)
   Vedanthangal bird sanctuary
  done clear
  D)
   Sultanpur bird sanctuary
  done clear
  View Answer play_arrow

• question_answer55)
  The biogeochemical cycles are of
  A)
   Two types        
  done clear
  B)
   three types
  done clear
  C)
   Four types
  done clear
  D)
   five types
  done clear
  View Answer play_arrow

• question_answer56)
  In the phosphorus cycle, weathering makes phosphate available first to
  A)
   Producers         
  done clear
  B)
   consumers
  done clear
  C)
   Decomposers    
  done clear
  D)
   none of these
  done clear
  View Answer play_arrow

• question_answer57)
  Which among the following is not included among the key elements of biodiversity?
  A)
   Ecological Diversity
  done clear
  B)
   Genetic Diversity
  done clear
  C)
   Organismal Diversity
  done clear
  D)
   Forest Diversity
  done clear
  View Answer play_arrow

• question_answer58)
  For a balanced ecosystem of land, India should be left for forests
  A)
   35%                
  done clear
  B)
   11%
  done clear
  C)
   20%                
  done clear
  D)
   15%
  done clear
  View Answer play_arrow

• question_answer59)
  The final stable community in ecological succession is
  A)
   Pioneers           
  done clear
  B)
   sere
  done clear
  C)
   Climax
  done clear
  D)
   carnivores
  done clear
  View Answer play_arrow

• question_answer60)
  In an aquatic ecosystem, the trophic level equivalent to cows in grasslands is
  A)
   Phytoplankton
  done clear
  B)
          zooplankton
  done clear
  C)
   Nekton
  done clear
  D)
   benthos
  done clear
  View Answer play_arrow

• question_answer61)

  Consider the following sentences-

  1. India is the home of more than half of world tiger population.

  2. India has successfully conducted Global Tiger Summit at Ranthambore Tiger Reserve, Rajasthan.

  3. There are only 13 countries in the world that have still tiger population.

  4. During Global Tiger Summit at Thailand, it was decided to double the numbers of Asian tigers by 2022. Which of the statements given above is/are correct?

  A)
   1, 2 and 3 are correct    
  done clear
  B)
   All of them are correct
  done clear
  C)
   1 and 2 are correct        
  done clear
  D)
   2 and 3 are correct
  done clear
  View Answer play_arrow

• question_answer62)
  Maximum energy is stored in
  A)
   Producers
  done clear
  B)
   herbivores
  done clear
  C)
   Carnivores       
  done clear
  D)
   decomposers
  done clear
  View Answer play_arrow

• question_answer63)

  Niche refers to

  1. Status of species in ecological pyramid

  2. Habitat of species

  3. Behaviour of species

  4. Profession of species

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

• question_answer64)
  The representation of biomass amongst producers and consumers is called
  A)
   Pyramid of biomass
  done clear
  B)
   trophic levels
  done clear
  C)
   Energy pyramids
  done clear
  D)
   standing crops
  done clear
  View Answer play_arrow

• question_answer65)
  Trophic levels are linked with
  A)
   Plants  
  done clear
  B)
   animals
  done clear
  C)
   Carnivores       
  done clear
  D)
   food chains
  done clear
  View Answer play_arrow

• question_answer66)
  Which one of the following strongly threatens biodiversity?
  A)
   Fragile ecosystems such as mangroves wetlands
  done clear
  B)
   Inaccessible habitats in the Himalayas
  done clear
  C)
   Destruction of natural habitats and vegetation, and jhum cultivation
  done clear
  D)
   Creation of biosphere reserves
  done clear
  View Answer play_arrow

• question_answer67)
  Which is the top most level amongst following?
  A)
   Ecosystem       
  done clear
  B)
   Population
  done clear
  C)
   Biosphere
  done clear
  D)
   Community
  done clear
  View Answer play_arrow

• question_answer68)
  Sunderbans rich in halophytes are present in
  A)
   West Bengal
  done clear
  B)
   Orissa
  done clear
  C)
   Assam 
  done clear
  D)
   Kerala
  done clear
  View Answer play_arrow

• question_answer69)
  In a food chain, the total amount of living material, is depicted by
  A)
   Pyramid of energy         
  done clear
  B)
   pyramid of numbers
  done clear
  C)
   Pyramid of biomass
  done clear
  D)
   all of these
  done clear
  View Answer play_arrow

• question_answer70)
  In a food chain, maximum amount of energy is stored in
  A)
   producer          
  done clear
  B)
          Primary consumer
  done clear
  C)
   Decomposer     
  done clear
  D)
          Secondary consumer
  done clear
  View Answer play_arrow

• question_answer71)
  The permanent decrease in population number occurs due to
  A)
   Mortality          
  done clear
  B)
          natality and migration
  done clear
  C)
   Territoriality
  done clear
  D)
   Emigration
  done clear
  View Answer play_arrow

• question_answer72)
  The interaction in nature where one gets benefit on expense of other is
  A)
   Scavenging
  done clear
  B)
   commensalism
  done clear
  C)
   Predation         
  done clear
  D)
   parasitism
  done clear
  View Answer play_arrow

• question_answer73)
  Sustainable environment means
  A)
   Disturbed environment
  done clear
  B)
   Polluted environment
  done clear
  C)
   Non-developing environment
  done clear
  D)
   Environment which can be maintained
  done clear
  View Answer play_arrow

• question_answer74)
  One of the ex-situ conservation methods for the endangered species is
  A)
   National parks
  done clear
  B)
          cryopreservation
  done clear
  C)
   Biosphere reserves
  done clear
  D)
   wildlife sanctuaries
  done clear
  View Answer play_arrow

• question_answer75)
  Hardy-Weinberg Law of population genetics is applicable to the populations where mating is
  A)
   Apomictic        
  done clear
  B)
   panmictic
  done clear
  C)
   Both above      
  done clear
  D)
   none above
  done clear
  View Answer play_arrow

• question_answer76)
  The equation \[dN/dt={{r}_{m}}N,\] (The Law of population growth) given by French mathematician P.F. Verhulst suggests the rate of increase of population per unit time depends upon
  A)
   Innate capacity for increase
  done clear
  B)
   Population size
  done clear
  C)
   Unutilized opportunity for population growth
  done clear
  D)
   All above
  done clear
  View Answer play_arrow

• question_answer77)
  The correct match of atmospheric gases is
  A)
   nitrogen- 0.03%, oxygen- 78.08%, argon- 0.93% and \[C{{O}_{2}}\] ? 20.95%
  done clear
  B)
   nitrogen-78.08%, oxygen- 20.95%, argon- 0.03% and \[C{{O}_{2}}\]- 0.03%
  done clear
  C)
   nitrogen- 0.03%, oxygen- 78.08%, argon-20.95% and \[C{{O}_{2}}\]- 0.93%
  done clear
  D)
   nitrogen- 78-08%, Oxygen- 20.95%, argon- 0.93% and \[C{{O}_{2}}\]- 0.03%
  done clear
  View Answer play_arrow

• question_answer78)
  Match the following:-

  List-I (Wild Life Park/ Sanctuary)	List-II (Animal protected)
  Kaziranga	(1) Elephant
  Ranthambore	(2) Lion
  Gir	(3) Rhinoceros
  Periyar	(4) Tiger

  A)
   A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]4         
  done clear
  B)
   A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3
  done clear
  C)
   A\[\to \]1, B\[\to \]4, C\[\to \]2, D\[\to \]3        
  done clear
  D)
   A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1
  done clear
  View Answer play_arrow

• question_answer79)
  Which of the following is the most productive ecosystem?
  A)
   Rice                
  done clear
  B)
   wheat
  done clear
  C)
   Maize  
  done clear
  D)
   sugarcane
  done clear
  View Answer play_arrow

• question_answer80)
  Which of the following is a component in an ecosystem?
  A)
   Consumers
  done clear
  B)
   flow of energy
  done clear
  C)
   Cycling of materials
  done clear
  D)
   both '2' and '3'
  done clear
  View Answer play_arrow

• question_answer81)
  How much energy is consumed from one trophic level to another trophic level?
  A)
   5%                  
  done clear
  B)
   10%
  done clear
  C)
   15%                
  done clear
  D)
   20%
  done clear
  View Answer play_arrow

• question_answer82)
  The green plants constitute
  A)
   First trophic level
  done clear
  B)
   Second trophic level
  done clear
  C)
   Third trophic level
  done clear
  D)
   Fourth trophic level
  done clear
  View Answer play_arrow

• question_answer83)
  Nitrogen oxides produced from the emission of automobiles and power plants, are the source of fine air borne particles which lead to:
  A)
   Photochemical smog
  done clear
  B)
   Dry acid deposition
  done clear
  C)
   Industrial smog
  done clear
  D)
   Wet acid deposition
  done clear
  View Answer play_arrow

• question_answer84)
  In an upright pyramid of biomass, the herbivores generally occupy which the position?
  A)
   First position     
  done clear
  B)
   second position
  done clear
  C)
   Third position
  done clear
  D)
          fourth position
  done clear
  View Answer play_arrow

• question_answer85)
  In a pond ecosystem, benthos means
  A)
   epineuston
  done clear
  B)
   periphyton
  done clear
  C)
   Zooplankton on water surface
  done clear
  D)
   Primary consumers at depth of a pond
  done clear
  View Answer play_arrow

• question_answer86)
  A lake with an inflow of domestic sewage rich in organic waste may result in:
  A)
   Drying of the lake very soon due to algal bloom.
  done clear
  B)
   An increased production offish due to lot of nutrients
  done clear
  C)
   Death of fish due to lack of oxygen
  done clear
  D)
   Increased population of aquatic food web organisms
  done clear
  View Answer play_arrow

• question_answer87)
  The dominant second trophic level in a lake ecosystem is
  A)
   Benthos           
  done clear
  B)
   plankton
  done clear
  C)
   Zooplankton     
  done clear
  D)
   phytoplankton
  done clear
  View Answer play_arrow

• question_answer88)
  Which of the following belong to the category of primary consumers?
  A)
   Water insects
  done clear
  B)
   snakes and frogs
  done clear
  C)
   Eagle and snakes          
  done clear
  D)
   insects and cattle
  done clear
  View Answer play_arrow

• question_answer89)
  Competitive interaction may be defined as interaction between two or more
  A)
   Species
  done clear
  B)
   genera
  done clear
  C)
   Population       
  done clear
  D)
   organisms
  done clear
  View Answer play_arrow

• question_answer90)
  The organism, which captures and feed on another organism by direct food relation is
  A)
   Prey                
  done clear
  B)
   predator
  done clear
  C)
   Scavenger        
  done clear
  D)
   omnivores
  done clear
  View Answer play_arrow

• question_answer91)
  A. The territorial boundaries of certain animals are marked by urination (dogs, tigers) or defaecation. R. Urine and faeces of such animals contain chemicals which serve as pheromones.
  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 but R is wrong
  done clear
  D)
   Both A and R are wrong
  done clear
  View Answer play_arrow

• question_answer92)
  Population means a group of organisms of
  A)
   Living beings in a city
  done clear
  B)
   Plants in a given area
  done clear
  C)
   Large animals at a place
  done clear
  D)
   Same species in a specific area
  done clear
  View Answer play_arrow

• question_answer93)
  Two opposite forces operate in the growth and development of every population. One of them is related with the ability to reproduce at a given rate. The force opposing it is called
  A)
   Mortality
  done clear
  B)
   Fecundity
  done clear
  C)
   Biotic control
  done clear
  D)
   Environmental resistance
  done clear
  View Answer play_arrow

• question_answer94)
  NEERI is the abbreviation of
  A)
   National Eugenics and Ecological Research Institute
  done clear
  B)
   National Ethological and Ecological Research Institute
  done clear
  C)
   National Environmental Engineering Research Institute
  done clear
  D)
   National Ecological and Environment Research Institute
  done clear
  View Answer play_arrow

• question_answer95)
  What is a key stone species?
  A)
   A rare species that has minimal impact on the biomass and on other species in the community
  done clear
  B)
   A dominant species that constitutes a large proportion of biomass, which affects many other species
  done clear
  C)
   A common species that has plenty of biomass, yet has a fairly low impact on the community's organization
  done clear
  D)
   A species which makes up only a small proportion of the total biomass of a community, yet has a huge impact on the community's organization and survival
  done clear
  View Answer play_arrow

• question_answer96)
  11th July is celebrated as
  A)
   World Aids Day
  done clear
  B)
   World Population Day
  done clear
  C)
   World Environment Day
  done clear
  D)
   World Science and Technology Day
  done clear
  View Answer play_arrow

• question_answer97)
  The carrying capacity of a population is determined by its
  A)
   Birth rate         
  done clear
  B)
   death rate
  done clear
  C)
   Poverty rate     
  done clear
  D)
   limiting resources
  done clear
  View Answer play_arrow

• question_answer98)
  The technical manipulation of living organisms, to get the required products both in quality and quantity at low cost, in a massive scale is called
  A)
   Bioenergy
  done clear
  B)
   biophysics
  done clear
  C)
   Biotechnology
  done clear
  D)
   biochemistry
  done clear
  View Answer play_arrow

• question_answer99)
  Which one of the following pairs of geographical areas show maximum biodiversity in our country?
  A)
   Sundarbans and Rann of Kutch
  done clear
  B)
   Eastern Ghats and West Bengal
  done clear
  C)
   Eastern Himalayas and Western Ghats
  done clear
  D)
   Kerala and Punjab
  done clear
  View Answer play_arrow

• question_answer100)
  Due to water pollution algae grew and fish died because
  A)
   They did not get light
  done clear
  B)
   They didn't get enough nutrients
  done clear
  C)
   The oxygen level decreased
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow