SSC Ecology And Environment Sample Paper

done NCERT Sample Paper-4 Total Questions - 100    [Download]

• question_answer1)

  The energy flow in an ecosystem is:

  1. Unidirectional

  2. Non-cyclic

  3. Cyclic

  4. Bidirectional

  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 4 only     
  done clear
  D)
   3 and 4 only
  done clear
  View Answer play_arrow

• question_answer2)

  Which of the following are required for the formation of Ground-level ozone (GLO)?

  1. Carbon dioxide

  2. Volatile Organic Compounds

  3. Sunlight

  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_answer3)
  Most harmful environmental pollutants are
  A)
   biodegradable
  done clear
  B)
   Corrosive agents
  done clear
  C)
   Non-biodegradable chemical
  done clear
  D)
   all of the above
  done clear
  View Answer play_arrow

• question_answer4)
  Path of energy flow in an ecosystem is
  A)
   Herbivores - producers - carnivores - decomposers
  done clear
  B)
   Herbivores - carnivores - producers - decomposes
  done clear
  C)
   Producers - carnivores - herbivores - decomposes
  done clear
  D)
   Producers - herbivores - carnivores - decomposers
  done clear
  View Answer play_arrow

• question_answer5)
  Which among the following metallic mineral is used both for nuclear reactors as well as stainless steel?
  A)
   Niobium          
  done clear
  B)
   Vanadium
  done clear
  C)
   Thorium          
  done clear
  D)
   Radium
  done clear
  View Answer play_arrow

• question_answer6)

  Which of the following is a part of the biogeochemical cycle?

  1. Soils

  2. Plants

  3. Atmosphere

  4. Oceans

  Select the correct answer using the codes given below.

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

• question_answer7)
  The management of biosphere in such a way that it may yield one greatest suitable benefit to present generation while maintaining its potential to meet the needs of future generation is
  A)
   Conservation
  done clear
  B)
   afforestation
  done clear
  C)
   Fossilization      
  done clear
  D)
   overexploitation
  done clear
  View Answer play_arrow

• question_answer8)
  Tendency of increase of species diversity in transition zone between two communities is called
  A)
   ecotone effect
  done clear
  B)
          Edge effect
  done clear
  C)
   Border effect    
  done clear
  D)
          Complementary effect
  done clear
  View Answer play_arrow

• question_answer9)
  Bio magnification means
  A)
   Accumulation of pesticide through food chain
  done clear
  B)
   Accumulation of pesticide in water
  done clear
  C)
   Increased pesticide degradation
  done clear
  D)
   Accumulation of pesticide in the soil
  done clear
  View Answer play_arrow

• question_answer10)
  Global warming is due to
  A)
   Greenhouse effect         
  done clear
  B)
   El Nino effect
  done clear
  C)
   Anti-Greenhouse Effect   
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer11)

  Consider the following statements regarding the National Green Tribunal:

  1. It is a specialized body equipped with the necessary expertise to handle environmental disputes involving multi- disciplinary issues

  2. It?s not bound by the Criminal Procedure Code, but is guided by principles of natural justice.

  3. it's supposed to be set up in 5 places with New Delhi as the principal bench.

  4. A Supreme Court judge is to chair the tribunal.

  Which of the above statements are correct?

  A)
   All of the above
  done clear
  B)
          1, 2, 3
  done clear
  C)
   1, 2, 4 
  done clear
  D)
   2, 3, 4
  done clear
  View Answer play_arrow

• question_answer12)
  Chronic arsenic poising causes
  A)
   Itai-Itai disease
  done clear
  B)
   Foot and mouth disease
  done clear
  C)
   Blue baby syndrome
  done clear
  D)
   Black foot disease
  done clear
  View Answer play_arrow

• question_answer13)

  With reference to forest ecosystems, consider the following statements:

  1. The number pyramid is neither inverted nor upward.

  2. The biomass pyramid is inverted. 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 dot 2
  done clear
  View Answer play_arrow

• question_answer14)
  World's largest producers and consumers of energy is:
  A)
   MERCOSUR    
  done clear
  B)
   IBSA
  done clear
  C)
   BRIC   
  done clear
  D)
   OPEC
  done clear
  View Answer play_arrow

• question_answer15)
  Eutrophication is
  A)
   Excessive oxygen in ponds
  done clear
  B)
   Abundant fertilizers in the lake
  done clear
  C)
   The lack of algae in the lake
  done clear
  D)
   Abundant nektons in the lake
  done clear
  View Answer play_arrow

• question_answer16)

  Which among these would increase carbon dioxide in the atmosphere?

  1. Deforestation

  2. Burning of firewood

  3. Automobiles

  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_answer17)

  Ozone depletion would impact the plant community in, several ways. These include:

  1. Increase in photosynthesis

  2. Decline in water use efficiency

  3. Decline in yield of 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)
   2 and 3 only     
  done clear
  D)
   1, 2 and 3
  done clear
  View Answer play_arrow

• question_answer18)

  The National Air Quality Monitoring Programme (NAMP) run by Central Pollution Control Board, monitors which of the following pollutants at all locations?

  1. Carbon dioxide

  2. Sulphur dioxide

  3. Oxides of nitrogen

  4. Suspended particulate matter

  Select the correct answer using the codes given below.

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

• question_answer19)
  The ecological processes follow the principle of uniformitarianism. This means:
  A)
   The ecological processes have a uniform effect
  done clear
  B)
   Same physical and biological processes that operates today operated in the past.
  done clear
  C)
   Physical and biological processes operate with a uniform rate
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer20)
  The soil near the surface is usually darker than about one meter down, this is because the top soil
  A)
   is richer in Ca and Mg
  done clear
  B)
   Contains more organic matter
  done clear
  C)
   is wetter than the sub soil
  done clear
  D)
   is drier than the sub soil
  done clear
  View Answer play_arrow

• question_answer21)

  Which among the following are mechanical method of soil conservation?

  1. bunding

  2. Terracing

  3. Contour farming

  4. Stubble mulching

  Select the correct answer using the codes given below.

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

• question_answer22)

  Methane \[(C{{H}_{4}})\] is one of the six greenhouse gases under the Kyoto protocol. Which of the following is/are sources of methane?

  1. Combustion of fossil fuels

  2. Wetlands

  3. Automobiles

  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_answer23)
  The phenomenon, where the pollutants pass in higher concentrations through the food chains and accumulate to the maximum in the final consumer, is called
  A)
   Eutrophication
  done clear
  B)
   Biogeochemical cycle
  done clear
  C)
   Biological magnification
  done clear
  D)
   Biological degradation
  done clear
  View Answer play_arrow

• question_answer24)

  Atmospheric nitrogen can undergo nitrogen fixation by

  1. cynabacteria

  2. Lightning

  3. Ultraviolet rays

  Select the correct answer using the codes given below.

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

• question_answer25)

  Pollutants can be classified as primary and secondary. Which of these is/are primary pollutant?

  1. Volatile Organic Compounds

  2. Ground Level Ozone

  3. Acid Rain

  Select the correct answer using the codes given below.

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

• question_answer26)
  Exposure of an organism to UV rays causes
  A)
   Photodynamic action
  done clear
  B)
   Formation of thymidine
  done clear
  C)
   Splitting of H-bonds of DNA
  done clear
  D)
   Splitting of phosphodiester bonds
  done clear
  View Answer play_arrow

• question_answer27)
  Which of the following Strategy is not a correct approach to reduce global warming?
  A)
   Reducing the greenhouse gas emission by limiting the use of fossil fuels
  done clear
  B)
   Increase the vegetation cover particularly the forest for photosynthetic utilization of \[C{{O}_{2}}\]
  done clear
  C)
   Minimizing the use of nitrogen fertilizers in agriculture for reducing \[{{N}_{2}}O\] emission
  done clear
  D)
   Increasing the use of air conditioners, refrigeration unit and production of plastic foams and propellants in aerosol spray cans
  done clear
  View Answer play_arrow

• question_answer28)
  Minamata disease was-caused due to the consumption of:
  A)
   Sea food containing lot of cadmium.
  done clear
  B)
   Fish contaminated with mercury.
  done clear
  C)
   Oysters with lot of pesticide.
  done clear
  D)
   Sea food contaminated with selenium
  done clear
  View Answer play_arrow

• question_answer29)
  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_answer30)
  Biological Oxygen Demand (BOD) is a measure of
  A)
   Industrial wastes poured into water bodies
  done clear
  B)
   Extent to which water is polluted with organic compounds
  done clear
  C)
   Amount of carbon monoxide inseparably combined with haemoglobin
  done clear
  D)
   Amount of oxygen needed by green plants during night
  done clear
  View Answer play_arrow

• question_answer31)
  One of the most remarkable effect of \[S{{O}_{2}}\] and its related transformed products on plants is
  A)
   Cell wall destruction       
  done clear
  B)
   Plasmolysis
  done clear
  C)
   Destruction of dictyosomes
  done clear
  D)
   Chlorophyll destruction
  done clear
  View Answer play_arrow

• question_answer32)
  Acid precipitation kills the fish by release of
  A)
   Anticoagulants
  done clear
  B)
   mercury
  done clear
  C)
   Aluminium       
  done clear
  D)
   lead
  done clear
  View Answer play_arrow

• question_answer33)
  Penicillium does not allow the growth of bacterium Staphylococcus. This type of relationship is called
  A)
   Antagonism      
  done clear
  B)
   mutualism
  done clear
  C)
   Commensalism
  done clear
  D)
   ammensalism
  done clear
  View Answer play_arrow

• question_answer34)
  Which of the following is not associated with wildlife protection?
  A)
   Project Tiger                 
  done clear
  B)
   Project Hangul
  done clear
  C)
   Project Great Indian Bustard
  done clear
  D)
   Project Kaiga
  done clear
  View Answer play_arrow

• question_answer35)

  Which of the following is/are the objectives of Biosphere Reserves?

  1. To conserve diversity and integrity of plants, animals and microorganisms.

  2. To provide facilities for education awareness and training.

  3. To establish research stations and to implement social welfare activities.

  4. To promote research on ecological conservation and other environmental aspects

  Select the correct answer from the given codes

  A)
   Only 3 
  done clear
  B)
   3 and 4
  done clear
  C)
   Only 4
  done clear
  D)
          All of these
  done clear
  View Answer play_arrow

• question_answer36)
  Commensalism is a type of relationship of two organisms in which
  A)
   Both organisms are harmed
  done clear
  B)
   Both organisms are benefitted
  done clear
  C)
   One is harmed and other is benefitted
  done clear
  D)
   One is benefitted and other is neither harmed nor benefitted
  done clear
  View Answer play_arrow

• question_answer37)
  In which state is the Kanha National Park?
  A)
   Rajasthan        
  done clear
  B)
   Uttar Pradesh
  done clear
  C)
   Madhya Pradesh
  done clear
  D)
   Assam,
  done clear
  View Answer play_arrow

• question_answer38)
  In wildlife conservation, which one among the following best defines an "endemic" species?
  A)
   When the critical number of a species declines in forest due to parasitic attack
  done clear
  B)
   A species which is cosmopolitan and can be commonly found in a biosphere.
  done clear
  C)
   An endangered species which is found in a few restricted' areas on the Earth.
  done clear
  D)
   A species confined to a particular region and not found anywhere else.
  done clear
  View Answer play_arrow

• question_answer39)
  What is a keystone species?
  A)
   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
  B)
   A common species that has plenty of biomass, yet has a fairly low impact on the community's organization
  done clear
  C)
   A rare species that has minimal impact on the biomass and on other species in the community
  done clear
  D)
   A dominant species that constitutes a large proportion of the - biomass and which affects many other species.
  done clear
  View Answer play_arrow

• question_answer40)
  Biodiversity includes
  A)
   Species
  done clear
  B)
   ecosystems
  done clear
  C)
   Genes  
  done clear
  D)
   all above
  done clear
  View Answer play_arrow

• question_answer41)
  Hot spots are characterized by
  A)
   Their location
  done clear
  B)
   Number of endemic species with extent of threat to them
  done clear
  C)
   Developing and developed countries
  done clear
  D)
   All above
  done clear
  View Answer play_arrow

• question_answer42)
  Polar bears are carnivores and prey on many arctic birds and fish. However, under natural conditions, no one found polar bears predating any penguin. This is because
  A)
   Penguins have chemical substance in their muscles which is toxic to polar bears
  done clear
  B)
   Penguins are gregarious and always move in groups. Therefore, a polar bear cannot approach them
  done clear
  C)
   Polar bears and penguins never coexist under natural conditions. The former lives in the North Pole while the latter lives in the South Pole
  done clear
  D)
   Polar bears and penguins display symbiotic relationships and they help each other for their existence in the ice-cold ecosystem
  done clear
  View Answer play_arrow

• question_answer43)
  The causes of mortality differ greatly between developing and developed countries. In developing countries, a high proportion of mortality is caused by
  A)
   infectious disease while in the developed world, most deaths are related to crime.
  done clear
  B)
   Poor nutrition while in the developed world; infectious disease causes most deaths.
  done clear
  C)
   Wars and accidents while in the developed world; most deaths are related to infectious disease.
  done clear
  D)
   Infectious disease while in the developed world most deaths are related to voluntary behaviours.
  done clear
  View Answer play_arrow

• question_answer44)
  Further acidification of the environment could be prevented by policies that
  A)
   Required catalytic converters on all vehicles sold in the developed nations.
  done clear
  B)
   Switched 50% of US vehicles to hybrid technologies.
  done clear
  C)
   Greatly reduced the acid-producing emissions of coal-burning power plants
  done clear
  D)
   Greatly reduced the acid-producing emissions of nuclear power plants.
  done clear
  View Answer play_arrow

• question_answer45)
  In a biotic community, the primary consumers are
  A)
   Carnivores        
  done clear
  B)
   omnivores
  done clear
  C)
   detritivores
  done clear
  D)
   herbivores
  done clear
  View Answer play_arrow

• question_answer46)
  Black buck in India is protected by
  A)
   bhils    
  done clear
  B)
          bishnois
  done clear
  C)
   phasis  
  done clear
  D)
   all tribals
  done clear
  View Answer play_arrow

• question_answer47)
  Which one of the following statements best reflect the overall position of current science on the role of biodiversity in ecosystems?
  A)
   The more species in an ecosystem, the greater the biomass production.
  done clear
  B)
   The more species in an ecosystem, the greater the drought resistance.
  done clear
  C)
   The effects of biodiversity on the functioning of an ecosystem are not consistent.
  done clear
  D)
   Almost every species in an ecosystem is essential to maintain the overall ecosystem.
  done clear
  View Answer play_arrow

• question_answer48)
  The concept of genetic drift was introduced by
  A)
   Hardy Weinberg
  done clear
  B)
   Sewall Wright
  done clear
  C)
   GG. Simpson   
  done clear
  D)
   Julian Huxley
  done clear
  View Answer play_arrow

• question_answer49)
  The only ape found in India in its natural habitat is
  A)
   orang-utan       
  done clear
  B)
   gorilla
  done clear
  C)
   Gibbon
  done clear
  D)
   chimpanzee
  done clear
  View Answer play_arrow

• question_answer50)
  In aquatic system, actively moving animal organisms are
  A)
   Benthic
  done clear
  B)
   Nektons
  done clear
  C)
   Zooplanktons    
  done clear
  D)
   Phytoplanktons
  done clear
  View Answer play_arrow

• question_answer51)
  In a desert ecosystem, the relatively more abundant animals are
  A)
   Arboreal          
  done clear
  B)
   Fossorial
  done clear
  C)
   Diurnal
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer52)
  "Trophic Level" on an organism refers to
  A)
   The rate at which it uses energy
  done clear
  B)
   Where it lives
  done clear
  C)
   Its food source
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer53)

  Which of the following statements are the mandates of National Ganga River Basin Authority:

  1. Maintenance of minimum ecological flows in the river Ganga

  2. Promotion of water conservation practices including recycling and reuse, rain water harvesting, and decentralised sewage treatment systems

  3. Investigations and research regarding problems of environmental pollution and conservation of the river Ganga. Which of the above statements is/are correct?

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

• question_answer54)
  The apex of age pyramid of a stationary population is
  A)
   Very narrow     
  done clear
  B)
   broad
  done clear
  C)
   Almost equal to base
  done clear
  D)
   none above
  done clear
  View Answer play_arrow

• question_answer55)
  Pedology is the study of
  A)
   Soil
  done clear
  B)
   Crop Disease
  done clear
  C)
   Rocks
  done clear
  D)
   Locomotion of animals
  done clear
  View Answer play_arrow

• question_answer56)

  Which of the Bird species mentioned below are reported to be assigned under the Critically Endangered list of IUCN Red list (version 2013):

  1. Baer's Pochard

  2. Forest Owlet

  3. Great Indian Bustard

  4. Bengal Florican

  5. Siberian Crane

  Spoon-billed Sandpiper

  A)
   1, 2, 4, 5, 6     
  done clear
  B)
   1, 2, 3, 4, 5, 6
  done clear
  C)
   1, 3, 5, 6         
  done clear
  D)
   1, 4, 5, 6
  done clear
  View Answer play_arrow

• question_answer57)
  Phosphate pollution is caused by
  A)
   Phosphate rock only
  done clear
  B)
   Agricultural fertilizers only
  done clear
  C)
   Sewage and phosphate rock
  done clear
  D)
   Sewage and agricultural fertilizers
  done clear
  View Answer play_arrow

• question_answer58)
  The only ape found in India is
  A)
   Gorilla 
  done clear
  B)
   Chimpanzee
  done clear
  C)
   Hoolockgibbon
  done clear
  D)
          Leaf monkey
  done clear
  View Answer play_arrow

• question_answer59)
  Crocodiles found in India are
  A)
   Crocodiluspotostis and C. palustris
  done clear
  B)
   C. palustris and Gavialisgangeticus
  done clear
  C)
   G. gangeticus and C. porosus
  done clear
  D)
   C. porosus, C. palustris and G. gangeticus.
  done clear
  View Answer play_arrow

• question_answer60)
  Mr. X is eating curd/yoghurt. For this food intake in a food chain he should be considered as occupying
  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_answer61)
  Grasshopper is a
  A)
   Primary consumer         
  done clear
  B)
   Secondary consumer
  done clear
  C)
   Decomposer            
  done clear
  D)
   Primary decomposer
  done clear
  View Answer play_arrow

• question_answer62)
  In the treatment of waste water before discharge, which treatment stage involves biological treatment?
  A)
   Primary treatment
  done clear
  B)
          Secondary treatment
  done clear
  C)
   Tertiary treatment         
  done clear
  D)
   Reverse osmosis stage
  done clear
  View Answer play_arrow

• question_answer63)
  The great damage of forest, in hills, causes
  A)
   Pollution in the ocean
  done clear
  B)
   Soil erosion by rain
  done clear
  C)
   Excessive grazing of cattle
  done clear
  D)
   Leaching of soil in the rock
  done clear
  View Answer play_arrow

• question_answer64)
  The major characteristics of the vegetation of a locality are controlled
  A)
   By man only
  done clear
  B)
   Mainly by climate
  done clear
  C)
   By animals only
  done clear
  D)
   By altitude of place only
  done clear
  View Answer play_arrow

• question_answer65)
  The environment as a self-sustaining system is mainly preserved by
  A)
   Man                
  done clear
  B)
   animals
  done clear
  C)
   Trees   
  done clear
  D)
   wild life
  done clear
  View Answer play_arrow

• question_answer66)
  The fuel wood crisis can be overcome by
  A)
   Better wood stoves
  done clear
  B)
   Greater afforestation
  done clear
  C)
   Efficient wood extractions
  done clear
  D)
   Using alternative energy sources like solar energy
  done clear
  View Answer play_arrow

• question_answer67)
  Which one of the following is considered as pioneer community in Xerarch?
  A)
   Annual herb
  done clear
  B)
   Perennial herb
  done clear
  C)
   Scrub stage      
  done clear
  D)
   Lichen
  done clear
  View Answer play_arrow

• question_answer68)
  Energy and nutrients enter a community by
  A)
   primary consumer
  done clear
  B)
   producer
  done clear
  C)
   Decomposer     
  done clear
  D)
   sunlight
  done clear
  View Answer play_arrow

• question_answer69)
  Water pollution is caused due to
  A)
   Industrial effluents
  done clear
  B)
   Sewage and other wastes
  done clear
  C)
   Agricultural discharges
  done clear
  D)
   all of these
  done clear
  View Answer play_arrow

• question_answer70)
  Acid rain is due to increase in atmospheric concentration of
  A)
   Ozone 
  done clear
  B)
          \[C{{O}_{2}}\] and \[CO\]
  done clear
  C)
   \[S{{O}_{3}}\] and \[CO\]
  done clear
  D)
          \[S{{O}_{2}}\] and nitrogen oxide
  done clear
  View Answer play_arrow

• question_answer71)
  The \[C{{O}_{2}}\] content by volume m the atmospheric air is about
  A)
   0-032%
  done clear
  B)
   0.32%
  done clear
  C)
   3.23% 
  done clear
  D)
   4%
  done clear
  View Answer play_arrow

• question_answer72)
  Carbon monoxide is a pollutant, because it
  A)
   Inhibits glycolysis
  done clear
  B)
   Reacts with oxygen
  done clear
  C)
   Reacts with haemoglobin
  done clear
  D)
   Makes nervous system inactive
  done clear
  View Answer play_arrow

• question_answer73)
  In Minamata Bay of Japan, the animals which remained free from Minamata disease, are
  A)
   Pigs                 
  done clear
  B)
   rabbits
  done clear
  C)
   Dogs   
  done clear
  D)
   cats
  done clear
  View Answer play_arrow

• question_answer74)
  Minamata disease was caused due to the consumption of
  A)
   Oysters with lot of pesticide
  done clear
  B)
   Fish contaminated with mercury
  done clear
  C)
   Sea food containing lot of cadmium
  done clear
  D)
   Sea food contaminated with selenium
  done clear
  View Answer play_arrow

• question_answer75)
  A food chain starts with
  A)
   Decay  
  done clear
  B)
   respiration
  done clear
  C)
   Photosynthesis
  done clear
  D)
   nitrogen fixation
  done clear
  View Answer play_arrow

• question_answer76)
  Most of the food chains are composed of
  A)
   1 or 2 species   
  done clear
  B)
   3 or 4 species
  done clear
  C)
   9 or 10 species
  done clear
  D)
          More than 16 species
  done clear
  View Answer play_arrow

• question_answer77)
  In India, tropical rain forests are found in
  A)
   Darjeeling         
  done clear
  B)
   Karnataka
  done clear
  C)
   Andaman        
  done clear
  D)
   Jammu & Kashmir
  done clear
  View Answer play_arrow

• question_answer78)
  Tropical rain forests are-found in which of the following vegetation?
  A)
   mesotherms      
  done clear
  B)
   megatherms
  done clear
  C)
   microtherms
  done clear
  D)
   stenotherms
  done clear
  View Answer play_arrow

• question_answer79)
  A snake feeding on a rat is an example of
  A)
   Primary consumer or herbivore
  done clear
  B)
   Primary consumer and primary carnivore
  done clear
  C)
   Secondary consumer or primary carnivore
  done clear
  D)
   teritary consumer and secondary carnivore
  done clear
  View Answer play_arrow

• question_answer80)
  A rat feeding upon potato tuber is
  A)
   Producer          
  done clear
  B)
   carnivore
  done clear
  C)
   Decomposer     
  done clear
  D)
   primary consumer
  done clear
  View Answer play_arrow

• question_answer81)
  Soil is a mixture of
  A)
   Sand and clay
  done clear
  B)
   Sand and humus
  done clear
  C)
   Clay and humus
  done clear
  D)
   Sand, clay and humus
  done clear
  View Answer play_arrow

• question_answer82)
  The factors relating to form and behaviour of the earth's surface are called
  A)
   Biotic  
  done clear
  B)
   edaphic
  done clear
  C)
   Climatic
  done clear
  D)
   topographic
  done clear
  View Answer play_arrow

• question_answer83)
  In most cases, the two major climatic factors affecting the distribution of organisms are
  A)
   Temperature and Sunlight
  done clear
  B)
   Predators and Parasites
  done clear
  C)
   Wind and Water
  done clear
  D)
   Water and Temperature
  done clear
  View Answer play_arrow

• question_answer84)
  Which of the following pairs is a sedimentary type of biogeochemical cycle?
  A)
   Oxygen and nitrogen
  done clear
  B)
   Phosphorus and sulphur
  done clear
  C)
   Phosphorus and nitrogen
  done clear
  D)
   Phosphorus, zinc and mercury
  done clear
  View Answer play_arrow

• question_answer85)
  The sum of all ecosystems on Earth is called the
  A)
   Stratosphere
  done clear
  B)
   Lithosphere
  done clear
  C)
   Biosphere
  done clear
  D)
   Hydrosphere
  done clear
  View Answer play_arrow

• question_answer86)
  The term "ecological pyramid" was proposed by
  A)
   Odum 
  done clear
  B)
   Elton
  done clear
  C)
   Tansley
  done clear
  D)
   Haeckel
  done clear
  View Answer play_arrow

• question_answer87)
  Which of the following is a man-made aquatic ecosystem?
  A)
   Canals 
  done clear
  B)
   dams
  done clear
  C)
   Aquarium        
  done clear
  D)
   all of these
  done clear
  View Answer play_arrow

• question_answer88)
  Which of the following is a major man-made biotic factor?
  A)
   Fire                 
  done clear
  B)
   grazing
  done clear
  C)
   Ploughing         
  done clear
  D)
   dairying
  done clear
  View Answer play_arrow

• question_answer89)
  The pyramid of energy is always
  A)
   upright
  done clear
  B)
                      inverted
  done clear
  C)
   Horizontal        
  done clear
  D)
   negative
  done clear
  View Answer play_arrow

• question_answer90)
  Zooplanktons are
  A)
   Parasites
  done clear
  B)
   Primary producers
  done clear
  C)
   Primary consumers
  done clear
  D)
   Primary decomposers
  done clear
  View Answer play_arrow

• question_answer91)
  Phytoplanktons of a pond ecosystem act as
  A)
   Producers           
  done clear
  B)
      Decomposers
  done clear
  C)
   Primary consumers        
  done clear
  D)
   Secondary consumers
  done clear
  View Answer play_arrow

• question_answer92)
  Phytoplanktons are important biotic components of
  A)
   Forest ecosystem
  done clear
  B)
   pond ecosystem
  done clear
  C)
   Grassland ecosystem
  done clear
  D)
   all of these
  done clear
  View Answer play_arrow

• question_answer93)
  When the number of organisms at successive levels are plotted, they give the shape of a pyramid. This is called the pyramid of
  A)
   Number           
  done clear
  B)
   energy
  done clear
  C)
   Biomass          
  done clear
  D)
   none of these
  done clear
  View Answer play_arrow

• question_answer94)
  The pyramid of number in grassland ecosystem, is
  A)
   Linear 
  done clear
  B)
   inverted
  done clear
  C)
   Upright
  done clear
  D)
   negative
  done clear
  View Answer play_arrow

• question_answer95)
  The maintenance of the constancy of internal environment of an organism is due to
  A)
   Predators
  done clear
  B)
   parasites
  done clear
  C)
   Homeostasis     
  done clear
  D)
   both '1'and '2'
  done clear
  View Answer play_arrow

• question_answer96)
  The study of relationship between individual species and environment is called
  A)
   Ecology
  done clear
  B)
   synecology
  done clear
  C)
   Autecology       
  done clear
  D)
   ethnology
  done clear
  View Answer play_arrow

• question_answer97)
  The primary succession refers to the development of communities on a
  A)
   Freshly cleared crop field
  done clear
  B)
   Forest cleared after devastating fire
  done clear
  C)
   Pond, freshly filled with water after a dry phase
  done clear
  D)
   newly-exposed habitat with no record of earlier vegetation
  done clear
  View Answer play_arrow

• question_answer98)
  Plant succession taking place in sandy area is called
  A)
   litho sere          
  done clear
  B)
   pasammo sere
  done clear
  C)
   Halo sere
  done clear
  D)
   all of these
  done clear
  View Answer play_arrow

• question_answer99)
  Climatology is the science of
  A)
   Biotic factors    
  done clear
  B)
   climatic factors
  done clear
  C)
   Edaphic factors
  done clear
  D)
   topographic factors
  done clear
  View Answer play_arrow

• question_answer100)
  The country, that shows negative population growth rate, is
  A)
   India               
  done clear
  B)
   France
  done clear
  C)
   Brazil  
  done clear
  D)
   Denmark
  done clear
  View Answer play_arrow