Year 9 Ecology And Photosynthesis

29 Questions
Year 9 Ecology And Photosynthesis

Year 9 Ecology, Photosynthesis and Respiration by E. Hung

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Questions and Answers
  • 1. 
    In the following food chain, which organism is the secondary consumer?grass ------> rabbit -------> snake ------> hawk
    • A. 

      Grass

    • B. 

      Rabbit

    • C. 

      Snake

    • D. 

      Hawk

  • 2. 
    Which of the following cannot be recycled?
    • A. 

      Nitrogen

    • B. 

      Carbon

    • C. 

      Water

    • D. 

      Energy

  • 3. 
    The term "nitrogen fixation" refers to
    • A. 

      The process that turns nitrates and nitites into nitrogen

    • B. 

      The process where bacteria turns nitrogen into a form that plants can use (ammonia)

    • C. 

      The process where nitrogen gas in the atmosphere is converted to nitrates

    • D. 

      None of the above

  • 4. 
    Sea anemones contain a venom that is used to sting and paralyze their prey. The clownfish contains an enzyme in their scales that makes them immune to the venom. This allows them to freely live in the sea anemone without being harmed. This is an example of what type of relationship?
    • A. 

      Predator-prey

    • B. 

      Mutualism

    • C. 

      Commensalism

    • D. 

      Parasitism

  • 5. 
    Mushrooms and other fungi are responsible for breaking down dead organic matter. In the ecosystem, they are called
    • A. 

      Producers

    • B. 

      Consumers

    • C. 

      Decomposers

    • D. 

      Scavengers

  • 6. 
    The amount of energy that is passed from one organism to the next in a food chain is
    • A. 

      5%

    • B. 

      10%

    • C. 

      15%

    • D. 

      20%

  • 7. 
    On what trophic level would you find organisms that use the sun's energy directly to make their own food?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 8. 
    • A. 

      The population of fox would decrease

    • B. 

      The population of grasshoppers would decrease

    • C. 

      The population of hawks would increase

    • D. 

      The population of rabbits would decrease

  • 9. 
    An animal that only eats the flesh of another animal is called a
    • A. 

      Producer

    • B. 

      Herbivore

    • C. 

      Carnivore

    • D. 

      Omnivore

  • 10. 
    Which of the following statements is true about matter and energy?
    • A. 

      Matter is not recycled; energy is recycled

    • B. 

      Matter is recycled; energy is not recycled

    • C. 

      Both matter and energy are recycled

    • D. 

      Neither matter nor energy are recycled

  • 11. 
    The ultimate source of energy for all organisms in life is
    • A. 

      Water

    • B. 

      Oxygen

    • C. 

      Nitrogen

    • D. 

      The sun

  • 12. 
    In the nitrogen cycle, the term "denitrification" refers to
    • A. 

      The conversion of ammonia into nitrogen

    • B. 

      The conversion of nitrogen into ammonia

    • C. 

      The conversion of nitrates into nitrogen gas

    • D. 

      The conversion of nitrogen gas into nitrates

  • 13. 
    Which of the following is considered the main source of excess carbon dioxide in the atmosphere leading to the destruction of the ozone layer?
    • A. 

      Carbon gas released into the atmosphere from factories and cars

    • B. 

      Carbon dioxide being released from animals during the process of cellular respiration

    • C. 

      Carbon gas released into the soil through the process of decomposition

    • D. 

      Carbon dioxide released into the oceans during deposition and decomposition

  • 14. 
    All of the following are ways that we can protect the biosphere except
    • A. 

      Recycling

    • B. 

      Protecting waterways from the dumping of illegal chemicals

    • C. 

      Burning fossil fuels

    • D. 

      Decreasing the process of deforestation

  • 15. 
    The ecological role of an organism within an ecosystem is called its
    • A. 

      Food web

    • B. 

      Niche

    • C. 

      Habitat

    • D. 

      Biomass

  • 16. 
    In which cycle would you find denitrification?
    • A. 

      Water

    • B. 

      Carbon

    • C. 

      Nitrogen

    • D. 

      Energy

  • 17. 
    Which of the following organisms is an autotroph?
    • A. 

      Algae

    • B. 

      A bear

    • C. 

      A cheetah

    • D. 

      A fish

  • 18. 
    Which of the following is an abiotic factor in an ecosystem?
    • A. 

      Bird

    • B. 

      Tree

    • C. 

      Rock

    • D. 

      Bacteria

  • 19. 
       In the above food chain, the snake is an example of a
    • A. 

      Producer

    • B. 

      Primary consumer

    • C. 

      Secondary consumer

    • D. 

      Tertiary consumer

  • 20. 
    What is the most important product in Respiration?
    • A. 

      Carbon dioxide

    • B. 

      Oxygen

    • C. 

      Energy

    • D. 

      Water

  • 21. 
    Green plants undergo photosynthesis to make their own food. The followings are required for this process except
    • A. 

      Sunlight

    • B. 

      Oxygen

    • C. 

      Water

    • D. 

      Carbon dioxide

  • 22. 
    How do biotic resources differ from abiotic resources? 
    • A. 

      Biotic resources are more important than abiotic resources

    • B. 

      Biotic resources are limited and abiotic are unlimited.

    • C. 

      Biotic resources are living and abiotic resources are nonliving

    • D. 

      Biotic resources are non-living and abiotic resources are living

  • 23. 
    In an energy pyramid, the bottom level represents:
    • A. 

      Producers

    • B. 

      Consumers

    • C. 

      Decomposers

    • D. 

      Scavengers

  • 24. 
    A species feeding on the tissue of its host, while not killing it directly, is a
    • A. 

      Decomposer

    • B. 

      Predator

    • C. 

      Parasite

    • D. 

      Consumer

  • 25. 
    What is Ecology?
    • A. 

      A thing that makes up their surroundings

    • B. 

      Organism that feed directly or indirectly on producers

    • C. 

      Relationships and other interactions with other organisms

    • D. 

      The study of the earth

  • 26. 
    Which of the following levels of organisation is arranged in the correct sequence from most to least inclusive?
    • A. 

      Community, ecosystem, individual, population

    • B. 

      Ecosystem, community, population, individual

    • C. 

      Population, ecosystem, individual, community

    • D. 

      Individual, community, population, ecosystem

  • 27. 
    Bacteria living inside a humans intestine is an example of a ___________ relationship.
    • A. 

      Mutualism

    • B. 

      Commensalism

    • C. 

      Parasitism

    • D. 

      Predation

  • 28. 
    Which if the following is an example of a heterotroph?
    • A. 

      Grass

    • B. 

      Rabbit

    • C. 

      Wheat

    • D. 

      Seaweed

  • 29. 
    What is a "commensalism" relationship?
    • A. 

      Win/win

    • B. 

      Win/lose

    • C. 

      Win/neutral

    • D. 

      Lose/lose