Unit 5, Ecosystem Lesson 18

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Unit 5, Ecosystem Lesson 18

In biology, an ecosystem is a community of living organisms in conjunction with the non-living components of their environment, all interacting with one another as a system. What else can you tell us about them?


Questions and Answers
  • 1. 
    Which statement best defines ecosystem?
    • A. 

      An ecosystem is all the non-living organisms and the physical environment within which and with which the organisms don't interact.

    • B. 

      An ecosystem includes all the interactions between living organisms and their environment in that area.

    • C. 

      An ecosystem is a systemic ecological process that reverberates echoes.

    • D. 

      None of the above

  • 2. 
    True or False. The ecosystem may be an urban centre or a forest, or it may be encompassed into the biome description, which will be one of tundra, boreal forest, or temperate deciduous forest. 
    • A. 

      True

    • B. 

      False

  • 3. 
    Which of the following are considered Producers.
    • A. 

      Grass

    • B. 

      Corn

    • C. 

      Dogs

    • D. 

      A and B are correct

  • 4. 
    What are the two parts in an ecosystem?
    • A. 

      A living community and the non-living environment.

    • B. 

      Part 1 and Part 2.

    • C. 

      A non-living community and the living environment

    • D. 

      Eco and system

  • 5. 
    True or False. A living community includes members of all kingdoms.
    • A. 

      True

    • B. 

      False

  • 6. 
    What belongs in a non-living environment?
    • A. 

      Water and Carbon Dioxide

    • B. 

      Light and Soil.

    • C. 

      Temperature and Wind

    • D. 

      All of the Above

  • 7. 
    What does trophic levels refer to?
    • A. 

      It refers tropical temperature levels.

    • B. 

      Trophic levels refer to the similar food levels in a living community.

    • C. 

      It refers to the different food levels in a living community.

    • D. 

      None of the above

  • 8. 
    ____________ are living organisms that use inorganic materials, such as carbon dioxide, water, and energy from sunlight to produce their own food.
    • A. 

      Producers

    • B. 

      Consumers

    • C. 

      Decomposers

    • D. 

      Composers

  • 9. 
    What best defines consumers.
    • A. 

      Consumers are organisms that feed on other living organisms. There are three types: Herbivores., Carnivores and Omnivores.

    • B. 

      Consumers are organisms that consume nutrients by purchasing them from the producers such as corn, wheat and grass.

    • C. 

      Consumers are organisms that feed on other living organisms. There are three types: Herbivores, Predators and Prey.

    • D. 

      None of the above.

  • 10. 
    Which statement best describes Decomposers.
    • A. 

      Decomposers highly paid musicians that decomposes classical works of Bach and Beethoven.

    • B. 

      Decomposers are living organisms whose ecological niche is to decompose organic matter.

    • C. 

      Decomposers return nutrients or raw materials back to the environment.

    • D. 

      B and C are correct.

  • 11. 
    What does the food chain show?
    • A. 

      The food chains shows the chain of foods in a food production line.

    • B. 

      The food chain shows how animals compete with each other for similar food sources.

    • C. 

      The food chain shows the decrease in available energy at successive trophic levels.

    • D. 

      The food chain shows the flow of energy through the trophic levels in an ecosystem.

  • 12. 
    What is the ultimate source of energy for all food chains?
    • A. 

      Water

    • B. 

      Sun

    • C. 

      Photosynthesis

    • D. 

      Oxygen

  • 13. 
    True or False. A producer uses sunlight directly to produce the energy it needs.
    • A. 

      True

    • B. 

      False

  • 14. 
    Consumers must ____________ to acquire the energy they need.
    • A. 

      Sunbathe

    • B. 

      Eat

    • C. 

      Drink

    • D. 

      Be merry

  • 15. 
    _______________ gives a clearer picture of the inter-relationships among living species and how energy flows in an ecosystem.
    • A. 

      Food chain

    • B. 

      Food web

    • C. 

      Food bank

    • D. 

      Food court

  • 16. 
    What does this picture illustrate?
    • A. 

      Food Chain

    • B. 

      Food Web

    • C. 

      Food Pyramid

    • D. 

      Snakes, Birds, Mouse, Trees and such...

  • 17. 
    What does a pyramid of energy show?
    • A. 

      It shows the decrease in available energy at successive trophic levels by group together all available producers, all herbivores and so on.

    • B. 

      It shows the inter-relationship among living species and how energy flows in an ecosystem

    • C. 

      The pyramid shows the works of Ancient Egyptians.

    • D. 

      C is correct.

  • 18. 
    What is this diagram called? 
    • A. 

      Pyramid of Energy

    • B. 

      Pyramid of Ecosystem

    • C. 

      Pyramid of Producers, Consumers and Decomposers

    • D. 

      All of the above

  • 19. 
    Why are there fewer first-order consumers?
    • A. 

      Because they require abundance of food to meet their energy demands.

    • B. 

      Because these consumers must eat many of the producers to get sufficient energy to survive.

    • C. 

      Because they are hunted.

    • D. 

      B and C are correct

  • 20. 
    Which word means "living together", and refers to the long-term relationships between species.
    • A. 

      Mutualism

    • B. 

      Symbiotic

    • C. 

      Friendship

    • D. 

      BSFF (Best Species Friends Forever)

  • 21. 
    ____________ is a type of relationship that benefits both organisms involved in a community.
    • A. 

      Mutualism

    • B. 

      Benefitialism

    • C. 

      Symbiotic

    • D. 

      Convenient

  • 22. 
    What type of relationship do these images portray:
    • A. 

      Mutualism

    • B. 

      Commensalism

    • C. 

      Parasitism

    • D. 

      Ahh! That alligator's gonna eat the cute bird!!

  • 23. 
    ______________ is another non-competitive type of relationship between organisms. It is when one organism benefits while the other if unaffected.
    • A. 

      Symbiotic

    • B. 

      Mutualism

    • C. 

      Commensalism

    • D. 

      Parasitism

  • 24. 
    What do you call the relationship between clown fish and anemones?
    • A. 

      Symbiotic

    • B. 

      Mutualism

    • C. 

      Commensalism

    • D. 

      Electrifyingly Hilarious!

  • 25. 
    ___________ is a symbiotic relationship in which one organism benefits, but the other is harmed.
    • A. 

      Parasitism

    • B. 

      Commensalism

    • C. 

      Mutualism

    • D. 

      Very selfish indeed!

  • 26. 
    True or False. The mount of chemical found in a primary consumer is more than five times greater than in the producer, because the primary consumer ingests many individual producers to sustain itself.
    • A. 

      True

    • B. 

      False

  • 27. 
    What does this diagram show?
    • A. 

      Carbon Cycle

    • B. 

      Cloud Formation

    • C. 

      Water Cycle

    • D. 

      None of the above

  • 28. 
    ____________ is the key element in all organic life forms. __________ compounds are used in the structure of living things.
    • A. 

      Oxygen

    • B. 

      Water

    • C. 

      Carbon

    • D. 

      All of the above

  • 29. 
    True or False. Producers use water, carbon dioxide, and light energy to produce organic compounds through photosynthesis.
    • A. 

      False

    • B. 

      True

  • 30. 
    The thin layer of carbon dioxide that surrounds the biosphere traps the heat around the Earth. Hold in the heart around the Earth is called the ______________.
    • A. 

      Bluehouse effect

    • B. 

      Greenhouse effect

    • C. 

      Global Warming

    • D. 

      El Nino

  • 31. 
    What is the process of "burning" organic matter in cells for energy?
    • A. 

      Cellular Respiration

    • B. 

      Cellular Perspiration

    • C. 

      Cellular Phone

    • D. 

      None of the above

  • 32. 
    True or False. Producers carry out both photosynthesis and cellular respiration.
    • A. 

      True

    • B. 

      False.

  • 33. 
    _______________ ingest and digest the products of photosynthesis. They also digest these products and extract their energy by cellular respiration.
    • A. 

      Producers

    • B. 

      Consumers

    • C. 

      Decomposers

    • D. 

      Parasites.

  • 34. 
    Which statements shows how carbon returns into the atmosphere?
    • A. 

      When coal is burned for energy, inorganic dioxide is released into the atmosphere.

    • B. 

      When producers and consumers die, they decompose and inorganic carbon dioxide is again released to the atmosphere

    • C. 

      When consumers ingest and digest the products.

    • D. 

      A and B are correct

    • E. 

      B and C are correct

  • 35. 
    Which statements are true about the Nitrogen Cycle?
    • A. 

      Nitrogen is an essential part of many key organic molecules.

    • B. 

      Organic nitrogen compounds include proteins and nucleic acids.

    • C. 

      Nitrogen molecule are the most abundant gas in Earth's atmosphere.

    • D. 

      None of the above

    • E. 

      All of the above

  • 36. 
    True or False. For plants to use nitrogen, the nitrogen atoms must be separated and attached to a larger compound like nitrate or oxygen atoms.
    • A. 

      True

    • B. 

      False

  • 37. 
    What are the three ways in which nitrogen is fixed in the atmosphere?
    • A. 

      Nitrogen-fixing bacteria and the action of lightning and industrial processes.

    • B. 

      Industrial processes, nitrogen-fixing molecules, and the action of digestions.

    • C. 

      All of the above

    • D. 

      B and C are correct.

  • 38. 
    Which processes returns nitrogen back to the environment?
    • A. 

      Excretion from living things decay, which returns nitrogen to the environment in the form of ammonia.

    • B. 

      By burning fossil fuels into coal.

    • C. 

      Denitrifying bacteria returns nitrates to the atmosphere in its gaseous form

    • D. 

      A and C are correct.

  • 39. 
    ____________ enables living things to produce phospholipids and energy molecules, and it helps organisms to assemble nucleic acids.
    • A. 

      Phosphorus

    • B. 

      Nitrogen

    • C. 

      Oxygen

    • D. 

      All of the above

  • 40. 
    Where is phosphorus primarily stored?
    • A. 

      In the atmosphere

    • B. 

      In decayed fossils

    • C. 

      In Earth's crust.

    • D. 

      In Phosphates.

  • 41. 
    How does phosphorus return to the environment?
    • A. 

      Waste products from living organisms and the decomposition of matter may return phosphorus to the soil.

    • B. 

      Erosion and weathering may move phosphorus into streams and rivers.

    • C. 

      Burning fossil fuel returns phosphorus into the atmosphere in a form of gas.

    • D. 

      A and B are correct

    • E. 

      A and C are correct.

  • 42. 
    ____________ is a branch of biology that deals with relationships between organisms and their habitat.
    • A. 

      Ecosystem

    • B. 

      Ecology

    • C. 

      Biology

    • D. 

      Psychology