Gr 8 Natural Sciences Ch 1.2: Ecosystems
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Questions and Answers

What is the term for the non-living physical and chemical elements of an ecosystem?

  • Abiotic (correct)
  • Habitat
  • Biotic
  • Ecosystem

    • What is the seasonal movement of organisms from one habitat to another called?

  • Migration
  • Hibernation
  • Migrate (correct)
  • Predation

    • What is the term for the living components of an ecosystem?

  • Habitat
  • Ecosystem
  • Biotic (correct)
  • Abiotic

    • What is the natural environment where an organism resides?

    <p>Habitat</p> Signup and view all the answers

    What is the process by which plants convert carbon dioxide and water into glucose and oxygen?

    <p>Photosynthesis</p> Signup and view all the answers

    What is the general equation for photosynthesis?

    <p>Carbon Dioxide + Water → Glucose + Oxygen</p> Signup and view all the answers

    What is the process by which plants and animals break down glucose molecules to release energy for cellular processes?

    <p>Respiration</p> Signup and view all the answers

    What is the term for an organism that hunts and feeds on other organisms?

    <p>Predator</p> Signup and view all the answers

    What is the by-product of the respiration process?

    <p>Carbon dioxide and water</p> Signup and view all the answers

    What is the result of competition between species in an ecosystem?

    <p>The population sizes and distribution of the competing species are affected</p> Signup and view all the answers

    What is an example of mutualism in an ecosystem?

    <p>Bees and flowers engaging in pollination</p> Signup and view all the answers

    What is the primary purpose of studying ecosystems?

    <p>To understand the structure and function of ecosystems</p> Signup and view all the answers

    What is an example of a predator-prey dynamic in an ecosystem?

    <p>Lions hunting zebras</p> Signup and view all the answers

    What determines the boundaries of an ecosystem?

    <p>The interactions and processes that occur within the ecosystem</p> Signup and view all the answers

    What is an example of an abiotic component in a pond ecosystem?

    <p>Water</p> Signup and view all the answers

    What is the purpose of respiration in organisms?

    <p>To produce energy</p> Signup and view all the answers

    What is an example of commensalism in an ecosystem?

    <p>Remora fish attaching themselves to sharks</p> Signup and view all the answers

    What is the role of plants in the ecosystem?

    <p>To produce oxygen and food for other organisms</p> Signup and view all the answers

    What is the collective functioning of all ecosystems on Earth known as?

    <p>Biosphere</p> Signup and view all the answers

    What is the primary role of abiotic components in an ecosystem?

    <p>To regulate the balance and flow of energy and nutrients</p> Signup and view all the answers

    Which of the following is a result of the interaction between biotic and abiotic components?

    <p>Maintaining the balance and flow of energy and nutrients</p> Signup and view all the answers

    What is the by-product of photosynthesis that is essential for the respiration of most living organisms?

    <p>Oxygen</p> Signup and view all the answers

    Which process involves the breakdown of glucose molecules to release energy for cellular processes?

    <p>Respiration</p> Signup and view all the answers

    What is the primary function of biotic components in an ecosystem?

    <p>To cycle nutrients</p> Signup and view all the answers

    What is the term for the specific physical space in which an ecosystem operates?

    <p>Ecosystem</p> Signup and view all the answers

    Which of the following is an example of an interaction between biotic and abiotic components?

    <p>Plants responding to sunlight</p> Signup and view all the answers

    What is the overall effect of respiration on the atmosphere?

    <p>It maintains a balance between oxygen and carbon dioxide</p> Signup and view all the answers

    What is the primary reason for competition between species in an ecosystem?

    <p>To obtain a limited resource, such as food or water</p> Signup and view all the answers

    What is the term for the interaction between a parasite and its host?

    <p>Parasitism</p> Signup and view all the answers

    What is the role of biotic components in an ecosystem?

    <p>They interact with abiotic components to sustain life</p> Signup and view all the answers

    How do ecologists study ecosystems?

    <p>By observing the interactions between biotic and abiotic components</p> Signup and view all the answers

    What is the result of feeding relationships in ecosystems?

    <p>Maintaining ecological balance and controlling population sizes</p> Signup and view all the answers

    What is the primary characteristic of an ecosystem's size?

    <p>Its boundaries are defined by the interactions and processes within it</p> Signup and view all the answers

    What is the role of plants in the respiration process?

    <p>They consume carbon dioxide and oxygen</p> Signup and view all the answers

    What is the purpose of studying the interactions between biotic and abiotic components in an ecosystem?

    <p>To understand the structure, function, and dynamics of ecosystems</p> Signup and view all the answers

    What is an example of a symbiotic relationship in an ecosystem?

    <p>Bees and flowers engaging in mutualism</p> Signup and view all the answers

    What is the purpose of respiration in an organism?

    <p>To release energy for cellular processes</p> Signup and view all the answers

    What type of interaction occurs when two or more species compete for the same limited resource?

    <p>Competition</p> Signup and view all the answers

    What is an example of a mutualistic relationship in an ecosystem?

    <p>Bees and flowers</p> Signup and view all the answers

    What is the ultimate source of energy for almost all ecosystems?

    <p>Sunlight</p> Signup and view all the answers

    What is the role of water in a pond ecosystem?

    <p>An abiotic component that provides habitat for aquatic plants</p> Signup and view all the answers

    What is the result of the interaction between biotic and abiotic components in an ecosystem?

    <p>A balance in the ecosystem</p> Signup and view all the answers

    What is an example of parasitism in an ecosystem?

    <p>Ticks and animals</p> Signup and view all the answers

    What is the effect of respiration on the atmosphere?

    <p>An increase in carbon dioxide levels</p> Signup and view all the answers

    What is the primary goal of studying ecosystems?

    <p>To understand the interactions between biotic and abiotic components</p> Signup and view all the answers

    What determines the boundaries of an ecosystem?

    <p>The interactions and processes that occur within it</p> Signup and view all the answers

    What is the primary function of an ecosystem?

    <p>To support the life of biotic components</p> Signup and view all the answers

    What is the role of sunlight in the photosynthesis process?

    <p>It triggers the conversion of carbon dioxide and water into glucose and oxygen</p> Signup and view all the answers

    What is the result of the interactions between biotic and abiotic components in an ecosystem?

    <p>A balance in the flow of energy and nutrients</p> Signup and view all the answers

    What is the purpose of studying the biosphere?

    <p>To identify the collective functioning of all ecosystems on Earth</p> Signup and view all the answers

    What is the process by which plants and animals release energy from glucose?

    <p>Respiration</p> Signup and view all the answers

    What is the relationship between the biotic and abiotic components in an ecosystem?

    <p>Interdependent</p> Signup and view all the answers

    What is the primary role of plants in the ecosystem?

    <p>To convert sunlight into energy</p> Signup and view all the answers

    What is the result of the photosynthesis process on the atmosphere?

    <p>An increase in oxygen</p> Signup and view all the answers

    Which component of an ecosystem is primarily responsible for regulating the flow of energy and nutrients?

    <p>Biotic components</p> Signup and view all the answers

    What is the ultimate consequence of the interactions between biotic and abiotic components in an ecosystem?

    <p>Maintenance of balance and stability</p> Signup and view all the answers

    Which process is essential for releasing oxygen into the atmosphere?

    <p>Photosynthesis</p> Signup and view all the answers

    What is the primary role of microorganisms in an ecosystem?

    <p>Decomposers</p> Signup and view all the answers

    What is the term for the specific physical space in which an ecosystem operates?

    <p>Ecosystem</p> Signup and view all the answers

    Which component of an ecosystem is responsible for absorbing carbon dioxide from the atmosphere?

    <p>Plants</p> Signup and view all the answers

    What is the primary function of abiotic components in an ecosystem?

    <p>Providing habitat for biotic components</p> Signup and view all the answers

    What is the ultimate source of energy for almost all ecosystems?

    <p>Sunlight</p> Signup and view all the answers

    What is the primary function of the respiration process in an ecosystem?

    <p>To release energy for cellular processes</p> Signup and view all the answers

    What is the result of symbiotic relationships in an ecosystem?

    <p>Both species benefit</p> Signup and view all the answers

    What is the primary role of abiotic components in an ecosystem?

    <p>To support the growth and survival of biotic components</p> Signup and view all the answers

    What is the effect of competition between species on an ecosystem?

    <p>It affects the population sizes and distribution of the competing species</p> Signup and view all the answers

    What is the primary goal of studying ecosystems?

    <p>To understand the interactions between biotic and abiotic components</p> Signup and view all the answers

    What is the role of sunlight in the photosynthesis process?

    <p>It provides energy for plants to convert carbon dioxide and water into glucose</p> Signup and view all the answers

    What is the result of feeding relationships in an ecosystem?

    <p>It controls the flow of energy and nutrients in an ecosystem</p> Signup and view all the answers

    What determines the boundaries of an ecosystem?

    <p>The interactions and processes that occur within it</p> Signup and view all the answers

    What is the primary characteristic of an ecosystem's size?

    <p>It can vary greatly in complexity and size</p> Signup and view all the answers

    What is the ultimate source of energy for almost all ecosystems?

    <p>The sun</p> Signup and view all the answers

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