Our Environment

15 Questions

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Our Environment

Our environment is a simple and basic quiz probing on the basic environmental knowledge. This is in regard to the living things and their relationships, including the non-living organisms. All the best as you attempt it.


Questions and Answers
  • 1. 
    In a food chain, the initial organism is usually:
    • A. 

      Photosynthetic

    • B. 

      Herbivore

    • C. 

      Saprophytic

    • D. 

      Parasitic

  • 2. 
    • A. 

      Producer to decomposer

    • B. 

      Producer to primary consumer

    • C. 

      Primary consumer to secondary consumer

    • D. 

      Secondary consumer to tertiary consumer

  • 3. 
    • A. 

      (iii)

    • B. 

      (iv)

    • C. 

      (i) and (iii)

    • D. 

      (ii) and (iv)

  • 4. 
    In the figure given alongside, the various trophic levels are shown in the form of pyramid. At what trophic level the maximum energy is available.
    • A. 

      T4

    • B. 

      T2

    • C. 

      T1

    • D. 

      T3

  • 5. 
    Sahara Desert was formed over a period of time due to one of the following uncontrolled activities of man:
    • A. 

      Excessive cutting down of forests and trees

    • B. 

      Excessive killing of large herbivorous

    • C. 

      Excessive killing of large carnivores

    • D. 

      Excessive use of poisonous chemical called herbicides

  • 6. 
    What percentage of sun’s energy falling on the leaves of green plants is utilized by the plants in the process of photosynthesis and stored as chemical energy of food?
    • A. 

      1 percent

    • B. 

      10 percent

    • C. 

      20 percent

    • D. 

      99 percent

  • 7. 
    The flow of energy in an ecosystem is always:
    • A. 

      Unidirectional

    • B. 

      Bidirectional

    • C. 

      Cyclic

    • D. 

      Multidirectional

  • 8. 
    The excessive exposure of humans to ultraviolet rays result in: (i) Damage to immune system (ii) Damage to lungs (iii) Skin cancer (iv) Peptic ulcers
    • A. 

      (i) and (ii)

    • B. 

      (ii) and (iv)

    • C. 

      (iii) and (iv)

    • D. 

      (i) and (iii)

  • 9. 
    Most of the water surface of a lake is covered with algae. This algae is a part of the food chain which also includes small fish, bird, larvae and big fish. Which of the following will obtain the maximum energy?
    • A. 

      Big fish

    • B. 

      Bird

    • C. 

      Larvae

    • D. 

      Small fish

  • 10. 
    If the energy transferred to a tertiary consumer in a food chain is 10 J, how energy was available to the primary consumer?
    • A. 

      100 J

    • B. 

      500 J

    • C. 

      1000 J

    • D. 

      5000 J

  • 11. 
    O2 is converted into O3 by the action of:
    • A. 

      Infrared radiations

    • B. 

      Ultraviolet radiations

    • C. 

      Gamma radiations

    • D. 

      Cosmic radiations

  • 12. 
    The ten percent law is associated with:
    • A. 

      Transfer of energy from various trophic levels to decomposers in a food chain

    • B. 

      Transfer of chemical energy from one organism to another

    • C. 

      Transfer of ATP energy into muscular energy

    • D. 

      Transfer of sun’s energy to the organisms called producers

  • 13. 
    What will happen if deer is missing in the food chain given below? Grass
    • A. 

      The population of tiger increases

    • B. 

      The population of grass decreases

    • C. 

      Tiger will start eating grass

    • D. 

      The population of tiger decreases and the population of grass increases

  • 14. 
    Name the process in which a harmful chemical enters the food chain and gets concentrated at each level in the food chain.
    • A. 

      Concentration

    • B. 

      Biomagnifications

    • C. 

      Expansion

    • D. 

      Pollution

  • 15. 
    A natural phenomenon that becomes harmful due to pollution is
    • A. 

      Global warming

    • B. 

      Ecological balance

    • C. 

      Greenhouse effect

    • D. 

      Desertification