10th Class Science Our Environment Question Bank

done Our Environment Total Questions - 40

• question_answer1)
  Which one of the following is a non-biodegradable waste?
  A)
  Wood                done clear
  B)
  Cattle dung done clear
  C)
  Polythene bags done clear
  D)
         Paper done clear
  E)
  None of these done clear
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• question_answer2)
  Which one of the following is a bio-degradable waste?
  A)
  Iron nails                       done clear
  B)
  Silver foils done clear
  C)
  Plastic bottles     done clear
  D)
         Animal bones done clear
  E)
  None of these done clear
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• question_answer3)
  Decomposers in ecosystem act as _____ of environment.
  A)
  Recycling agent  done clear
  B)
  Cleansing agents done clear
  C)
  Producers           done clear
  D)
         Both [a] and [b] done clear
  E)
  None of these done clear
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• question_answer4)
  Microscopic organisms freely floating on the surface of water in a pond are called _________.
  A)
  Herbivorous                   done clear
  B)
  Planktons done clear
  C)
  Carnivorous       done clear
  D)
         Producers done clear
  E)
  None of these done clear
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• question_answer5)
  Which one of the following statements is correct?

  Statement 1: A grassland is an example of a land based ecosystem.

  Statement 2: A pond is an example of a water based ecosystem.

  A)
  Statement 1 done clear
  B)
  Statement 2 done clear
  C)
  Both statements are correct done clear
  D)
  Both statements are incorrect done clear
  E)
  None of these done clear
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• question_answer6)
  In terms of food chain, which of the following belongs to the same trophic level?
  A)
  Snake and grass done clear
  B)
  Grass and tree done clear
  C)
  lizard and elephant          done clear
  D)
  Bacteria and grass done clear
  E)
  None of these done clear
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• question_answer7)
  Which of the following is a food chain?
  A)
  Grass \[\to \]  rice \[\to \] sugarcane done clear
  B)
  Grass \[\to \]  fish \[\to \] elephant done clear
  C)
  Snake \[\to \] grass \[\to \] elephant done clear
  D)
  Grass \[\to \] goat \[\to \] lion done clear
  E)
  None of these done clear
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• question_answer8)
  In the given food chain plants \[\to \] goat \[\to \] man, if 100 J of energy is available at the producer level, then the energy transferred to the man is____.
  A)
  \[10J\]                           done clear
  B)
  \[1J\] done clear
  C)
  \[0.1J\]              done clear
  D)
         \[100J\] done clear
  E)
  None of these done clear
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• question_answer9)
  The large carnivores which feed upon the small carnivores are called:
  A)
  Primary consumers done clear
  B)
  Secondary consumers done clear
  C)
  Tertiary consumers done clear
  D)
  All the above done clear
  E)
  None of these done clear
  View Solution play_arrow

• question_answer10)
  In the following food chain eagle is at which trophic level?
  A)
  Second trophic level done clear
  B)
  First trophic level done clear
  C)
  Fourth trophic level done clear
  D)
  Third trophic level done clear
  E)
  None of these done clear
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• question_answer11)
  A food chain involves Flower \[\to \] Caterpillar \[\to \]Frog \[\to \]Snake \[\to \]Owl. If all the owls are removed from this food chain then which of the following options is correct?
  A)
  Number of caterpillars will increase greatly. done clear
  B)
  Population of frogs will decrease apparently. done clear
  C)
  Population of snakes will increase greatly. done clear
  D)
  All the above done clear
  E)
  None of these done clear
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• question_answer12)
  The given table classifies four animals P, Q, R, S according to their feeding habit

  Herbivorous	Carnivorous	Omnivorous
  P Q	R	S

  Which of the following shows their correct interlinking with respect to their feeding habits?
  A)
     done clear
  B)
  done clear
  C)
                    done clear
  D)
  done clear
  E)
  None of these done clear
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• question_answer13)
  Which one of the following options belongs to phytoplanktons?
  A)
  Algae    done clear
  B)
  Protozoa   done clear
  C)
  Fungi                 done clear
  D)
         Virus done clear
  E)
  None of these done clear
  View Solution play_arrow

• question_answer14)
  Which of the following belongs to a group of biotic component of the environment?
  A)
  Tree, water, soil, animals done clear
  B)
  Soil, animals, plants, sea done clear
  C)
  Animal, plants, microorganisms done clear
  D)
  Microorganisms, plants, soil, water done clear
  E)
  None of these done clear
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• question_answer15)
  Decomposers are also known as :
  A)
  Autotrophs                     done clear
  B)
  Producers done clear
  C)
  Saprotrophs done clear
  D)
         Tertiary consumers done clear
  E)
  None of these done clear
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• question_answer16)
  Which of the following constitutes a food chain?
  A)
  Mango, Bamboo, Lion, Human done clear
  B)
  Grass, Rice, Banana, Fish done clear
  C)
  Grass, Snail, Small fish, Human done clear
  D)
  Elephant, Grass, Zebra, Fish done clear
  E)
  None of these done clear
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• question_answer17)
  Which of the following belongs to the same trophic level?
  A)
  Parrot and Rabbit done clear
  B)
  Spider and Crab done clear
  C)
  Kangaroo and Giraffe done clear
  D)
  Centipede and Millipede done clear
  E)
  None of these done clear
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• question_answer18)
              Direction: Look at the following figure and answer the questions. Which of the following can replace X to complete the given food chain?
  A)
    done clear
  B)
  done clear
  C)
    done clear
  D)
  done clear
  E)
  None of these done clear
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• question_answer19)
  Direction: Look at the following figure and answer the questions. ?X? is a :
  A)
  Producer done clear
  B)
   Primary consumer done clear
  C)
  Secondary Consumer      done clear
  D)
  Tertiary consumer done clear
  E)
  None of these done clear
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• question_answer20)
  Which of the following statements best describes the food web?
  A)
  Sequence of living organisms in a community in which one organism consumes another organism to transfer food energy. done clear
  B)
  Inter - connected food chains operation in an ecosystem which establish a network of relationships between various species. done clear
  C)
  A diet which contains all the nutrients in appropriate amount. done clear
  D)
  A food chain that contains only herbivores. done clear
  E)
  None of these done clear
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• question_answer21)
  Ten percent law was given by:
  A)
  Darwin              done clear
  B)
  Linnaeus done clear
  C)
  Lindeman          done clear
  D)
         Pasteur done clear
  E)
  None of these done clear
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• question_answer22)
  Increase in the concentration of harmful chemical substances in the body of living organisms is known as:
  A)
  Biological oxygen demand done clear
  B)
  Biomagnification done clear
  C)
  Biosynthesis done clear
  D)
  Biogeochemical cycle done clear
  E)
  None of these done clear
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• question_answer23)
  We can prevent global warming by:
  A)
  Using 3R?s for waste management. done clear
  B)
  Maximising the use of fossil fuels. done clear
  C)
  Planting more and more trees. done clear
  D)
  Both [a] and [c] done clear
  E)
  None of these done clear
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• question_answer24)
  Which of the following substances is not an example of ODS?
  A)
  Chlorofluorocarbon done clear
  B)
  Methane done clear
  C)
  Nitrous oxides done clear
  D)
  All the above done clear
  E)
  None of these done clear
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• question_answer25)
  Which of the following diseases can be caused due to UV radiations?
  A)
  Skin cancer                    done clear
  B)
  Malaria done clear
  C)
  Typhoid done clear
  D)
         Anaemia done clear
  E)
  None of these done clear
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• question_answer26)
  A self-contained unit of living things and their non-living environment is known as :
  A)
  Forest                done clear
  B)
  Ecosystem done clear
  C)
  Biosphere           done clear
  D)
         Habitat done clear
  E)
  None of these done clear
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• question_answer27)
  Among the four living organisms R is present at the first trophic level while P is a secondary consumer because it depends on Q for its food and S is a tertiary consumer .Then which of the following options is correct for P, Q, R, S?
  A)
   P-Plant products, Q- Snake, R - Lion, S-Hawk done clear
  B)
  P -Frog,  Q-Grasshopper, R- Plant products, S-Snake done clear
  C)
  P-Grasshopper, Q-Snake, R-Plant products, S-Frog done clear
  D)
  P-Snake, Q -Plant products, R- Frog, S-Grasshopper done clear
  E)
  None of these done clear
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• question_answer28)
  At which trophic level the minimum energy is available in the given pyramid?   
  A)
  \[At\,\,{{T}_{1}}\]                     done clear
  B)
  \[At\,\,{{T}_{2}}\] done clear
  C)
  \[At\,\,{{T}_{3}}\]                     done clear
  D)
  \[At\,\,{{T}_{4}}\] done clear
  E)
  None of these done clear
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• question_answer29)
  Which of the following is a producer?
  A)
  Pitcher plant                   done clear
  B)
  Phytoplankton done clear
  C)
  Cyanobacteria done clear
  D)
         All the above done clear
  E)
  None of these done clear
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• question_answer30)
  ______ is an artificial ecosystem.
  A)
  Desert                done clear
  B)
  Forest done clear
  C)
  Crop field           done clear
  D)
         River done clear
  E)
  None of these done clear
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• question_answer31)
  Which of the following will have the maximum concentration of harmful chemicals in its body? Slug, Pigeon, Cat, Lettuce
  A)
  Slug                              done clear
  B)
  Pigeon done clear
  C)
  Lettuce              done clear
  D)
         Cat done clear
  E)
  None of these done clear
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• question_answer32)
  Which of the following is not a mode of waste disposal?
  A)
  Incineration                    done clear
  B)
  Composting done clear
  C)
  Incubation done clear
  D)
         All the above done clear
  E)
  None of these done clear
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• question_answer33)
  Direction: are given below. A portion of a river is covered with a green layer of tiny floating organisms L on its surface and the pond water also contains organisms like tadpole, small fish, Alligator. Organism L could be:
  A)
  Amoeba            done clear
  B)
  Arthropoda done clear
  C)
  Algae                done clear
  D)
         Fungi done clear
  E)
  None of these done clear
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• question_answer34)
  Direction: are given below. A portion of a river is covered with a green layer of tiny floating organisms L on its surface and the pond water also contains organisms like tadpole, small fish, Alligator. Which of the following is the correct food chain for the above organisms?
  A)
  Algae \[\to \]Tadpole \[\to \]Small fish \[\to \]Alligator done clear
  B)
  Tadpole \[\to \]Small fish \[\to \]Algae \[\to \] Alligator done clear
  C)
  Algae \[\to \]Tadpole \[\to \]Alligator \[\to \]Small fish done clear
  D)
  Algae \[\to \]Alligator \[\to \]Small fish \[\to \]Tadpole done clear
  E)
  None of these done clear
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• question_answer35)
  Which form of energy is transferred from one trophic level to another trophic level according to ten percent law?
  A)
  Light energy       done clear
  B)
  Electrical energy done clear
  C)
  Chemical energy  done clear
  D)
         Mechanical energy done clear
  E)
  None of these done clear
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• question_answer36)
  \[{{O}_{2}}\] is converted to\[{{O}_{3}}\]by _____ radiations.
  A)
  Gamma radiations done clear
  B)
  Infrared radiations done clear
  C)
  Ultraviolet radiations done clear
  D)
  Cosmic radiations done clear
  E)
  None of these done clear
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• question_answer37)
  A method in which garbage is burned at very high temperature to form as is known as:
  A)
  Composting                    done clear
  B)
  Incineration done clear
  C)
  Recycling           done clear
  D)
         Depletion done clear
  E)
  None of these done clear
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• question_answer38)
  Which of the following is incorrectly matched?
  A)
  Aquarium - an artificial ecosystem. done clear
  B)
  Parasite - organism which lives in or on another organism. done clear
  C)
  Phytoplankton - microscopic marine animals. done clear
  D)
  Ecology - study of interactions among organisms and their environment. done clear
  E)
  None of these done clear
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• question_answer39)
  Animal X in the given food chain is a :
  A)
  Producer done clear
  B)
  Primary consumer done clear
  C)
  Secondary consumer done clear
  D)
  Tertiary consumer done clear
  E)
  None of these done clear
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• question_answer40)
  A man is known as a tertiary consumer when he eats :
  A)
  Small fish          done clear
  B)
  Bread done clear
  C)
  Meat     done clear
  D)
         Sunflower oil done clear
  E)
  None of these done clear
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