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Biology Revision - Energy And Biomass In Food Chain

15 Questions
Food Quizzes & Trivia

B1. 5

Questions and Answers
  • 1. 
    Every time you move up a stage (trophic level) in a food chain there is...
    • A. 

      More energy

    • B. 

      Less energy

    • C. 

      More biomass

    • D. 

      Less biomass

  • 2. 
    There is usually a fewer _________ of organisms as you move up a trophic level as well eg - 100 dandelions ... feed ... 10 rabbits ...which feed... 1 fox
  • 3. 
    However this is not always true as 100 dandelions ... feed ... 10 rabbits ...which feed... 1 fox ... which could feed... 500 fleas therefore its often better to look at ___________ rather than numbers of organisms.
  • 4. 
    Each bar on a pyramid of biomass = how much each level would 'weigh' if you put all the animals together. So the fox would have a much ______ biomass than the fleas 
  • 5. 
    Food chains - 
    • Plant - primary ________
  • 6. 
    Food chains - 
    • Plant - primary producer
    • _________ - primary consumer
  • 7. 
    Food chains - 
    • Plant - primary producer
    • Herbivore - primary consumer
    • _______ - secondary consumer
  • 8. 
    Food chains - 
    • Plant - primary producer
    • Herbivore - primary consumer
    • Carnivore - secondary consumer
    • Carnivore - _________ consumer
  • 9. 
    Food chains - 
    • Plant - primary producer
    • Herbivore - primary consumer
    • Carnivore - secondary consumer
    • Carnivore - tertiary consumer
    • ___ carnivore - quaternary consumer
  • 10. 
    Wet mass = 
    • A. 

      Total mass when wet

    • B. 

      Total mass including water

    • C. 

      Total mass after rain

    • D. 

      Mass of water in organism

  • 11. 
    Dry mass = 
    • A. 

      Mass after rain

    • B. 

      Mass when normal - not wet

    • C. 

      Total mass exluding water

  • 12. 
    Respiration is the breakdown of _________ to release energy
  • 13. 
    Energy losses are mainly due to...
    • _____ products - faeces and urine - not all food is digested and absorbed, some is lost in waste
  • 14. 
    Energy losses are mainly due to...
    • waste products - faeces and urine - not all food is digested and absorbed, some is lost in waste
    • _____ production - in warm blooded animals - produced by respiration
  • 15. 
    Energy losses are mainly due to...
    • waste products - faeces and urine - not all food is digested and absorbed, some is lost in waste
    • heat production - in warm blooded animals - produced by energy from respiration
    • m________ in animals - requires energy from respiration