Science Chapter 13 Test

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  • 1/24 Questions

    Carbon and __________ are linked in one recycling process

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About This Quiz

This 'Science chapter 13 test' assesses knowledge on energy roles in ecosystems, energy transfer, and the water cycle. It evaluates understanding of energy dynamics, food chains, and ecological processes, crucial for students learning biology and environmental science.

Ecology Quizzes & Trivia

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  • 2. 

    Humans affect the carbon and oxygen cycle

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Humans affect the carbon and oxygen cycle because of their activities that release large amounts of carbon dioxide into the atmosphere. For example, burning fossil fuels for energy and deforestation both contribute to increased carbon dioxide levels. Additionally, humans also impact the oxygen cycle through deforestation, as trees play a crucial role in producing oxygen through photosynthesis. These human activities disrupt the natural balance of these cycles, leading to environmental issues such as climate change and decreased oxygen levels.

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  • 3. 

    Name the three energy roles that organism fill in an ecosystem

    • Consumer

    • Producer

    • Scavenger

    • Decomposer

    Correct Answer(s)
    A. Consumer
    A. Producer
    A. Decomposer
    Explanation
    Consumer, producer, and decomposer are the three energy roles that organisms fill in an ecosystem. Consumers are organisms that obtain energy by consuming other organisms. They are typically classified as herbivores, carnivores, or omnivores. Producers, such as plants, are organisms that produce their own food through photosynthesis. They convert sunlight into energy that can be used by other organisms. Decomposers, like fungi and bacteria, break down dead organic matter and recycle nutrients back into the ecosystem. They play a crucial role in the decomposition process and nutrient cycling.

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  • 4. 

    Has continental drift affected the dispersal of species?

    • Yes

    • No

    Correct Answer
    A. Yes
    Explanation
    Continental drift has indeed affected the dispersal of species. As the Earth's continents have moved over millions of years, they have created barriers and connections between different land masses. These movements have influenced the distribution and migration patterns of species, as they may have been isolated or connected to different ecosystems. This has led to the development of distinct biogeographic regions and the evolution of unique species in different parts of the world. Therefore, the movement of continents due to continental drift has had a significant impact on the dispersal of species.

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  • 5. 

    The process by which produces use the suns energy turn into water and carbon then into food molecules is called 

    • Fixation

    • Photosynthesis

    • Condensation

    • Dispersal

    Correct Answer
    A. Photosynthesis
    Explanation
    Photosynthesis is the correct answer because it is the process by which producers, such as plants, use the sun's energy to convert water and carbon dioxide into glucose (food molecules). This process occurs in the chloroplasts of plant cells and is essential for the production of oxygen and the formation of carbohydrates, which serve as a source of energy for the plant and other organisms in the food chain.

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  • 6. 

    When the world was 1 super continent it was called _______

    Correct Answer
    Pangaea
    Explanation
    During a time when all the continents were joined together into one large landmass, it was known as Pangaea. This supercontinent existed around 300 million years ago and gradually broke apart to form the continents we have today.

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  • 7. 

    Name the three major process that occur during the water cycle

    • PErcipatation

    • Evaporation

    • Condensations

    • Rain

    Correct Answer(s)
    A. PErcipatation
    A. Evaporation
    A. Condensations
    Explanation
    The three major processes that occur during the water cycle are precipitation, evaporation, and condensation. Precipitation refers to the process where water vapor in the atmosphere condenses into liquid or solid form and falls to the Earth's surface as rain, snow, sleet, or hail. Evaporation is the process where water from the Earth's surface, such as oceans, lakes, and rivers, turns into water vapor and rises into the atmosphere. Condensation is the process where water vapor in the atmosphere cools and changes back into liquid form, forming clouds.

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  • 8. 

    The______is the driving force behind the water cycle

    Correct Answer(s)
    Sun
    Explanation
    The sun is the driving force behind the water cycle because it provides the energy needed to evaporate water from the Earth's surface. This heat energy causes water to change from a liquid to a gas, forming water vapor. The water vapor then rises into the atmosphere where it cools and condenses to form clouds. Eventually, the condensed water droplets in the clouds become heavy enough to fall back to the Earth as precipitation, completing the water cycle. Without the sun's energy, the water cycle would not be possible.

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  • 9. 

    The energy pyramid shows the amount of _________ that moves from one feeding level to another food web

    Correct Answer(s)
    energy
    Explanation
    The energy pyramid illustrates the flow of energy from one feeding level to another in a food web. It represents the amount of energy that is transferred as organisms consume and are consumed by others. As energy moves up the pyramid, from producers to primary consumers, secondary consumers, and so on, it decreases because energy is lost as heat or used for metabolic processes. This pyramid helps to visualize the energy transfer and the decreasing amount of energy available at each trophic level in a food web.

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  • 10. 

    Why do organisms need oxygen?

    • It is food for all living things

    • Its a protien

    • Its a building block in the matter of living things

    Correct Answer
    A. Its a building block in the matter of living things
    Explanation
    Organisms need oxygen because it is a building block in the matter of living things. Oxygen is essential for cellular respiration, the process by which organisms convert glucose into energy. During cellular respiration, oxygen is used to break down glucose molecules and produce ATP, the main energy currency of cells. Without oxygen, organisms would not be able to generate enough energy to carry out their basic functions and survive. Therefore, oxygen plays a crucial role in the metabolism and overall functioning of living organisms.

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  • 11. 

    The death of all producers would be good for the carbon and oxygen cycles 

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The death of all producers would not be good for the carbon and oxygen cycles. Producers, such as plants and algae, play a crucial role in these cycles by photosynthesizing and converting carbon dioxide into oxygen. Without producers, there would be a decrease in oxygen production and an imbalance in the carbon cycle, leading to negative impacts on the environment. Therefore, the statement is false.

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  • 12. 

    The amount of energy gets higher as more consumers eat it

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false because the amount of energy does not increase as more consumers eat it. In fact, the opposite is true. As consumers eat the energy, it gets transferred and utilized, resulting in a decrease in the overall amount of energy available. This is due to the energy being converted into various forms such as heat or used for metabolic processes, ultimately leading to a decrease in the total energy available in the ecosystem.

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  • 13. 

    Energy enters most ecosystems as ________

    Correct Answer
    Sunlight
    Explanation
    Energy enters most ecosystems as sunlight. Sunlight is the primary source of energy for almost all living organisms on Earth. Through the process of photosynthesis, plants and some other organisms are able to convert sunlight into chemical energy in the form of glucose. This energy is then transferred through the food chain as organisms consume other organisms. Ultimately, sunlight is the initial and fundamental source of energy that fuels the functioning and productivity of ecosystems.

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  • 14. 

    Three ways organisms can be dispersed

    • Wind

    • Climate

    • Living things

    • Water

    Correct Answer(s)
    A. Wind
    A. Living things
    A. Water
    Explanation
    Organisms can be dispersed through various means, and three of these ways are wind, living things, and water. Wind can carry small organisms or their seeds to new locations, allowing for their dispersal. Living things, such as animals or birds, can also aid in dispersal by carrying organisms or their seeds on their bodies or through their digestive system. Water is another medium through which organisms can be dispersed, as they can be carried along by currents or attached to floating debris. These three methods play a crucial role in the movement and distribution of organisms in different habitats.

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  • 15. 

    Name and example of a decomposer

    Correct Answer(s)
    Mushrooms
    Bacteria
    Explanation
    Mushrooms and bacteria are examples of decomposers. Decomposers are organisms that break down dead organic matter, such as dead plants and animals, into simpler substances. Mushrooms are fungi that obtain their nutrients by decomposing organic matter, while bacteria are microscopic organisms that play a crucial role in decomposition by breaking down complex organic compounds. Both mushrooms and bacteria contribute to the recycling of nutrients in ecosystems by breaking down dead material and returning essential elements back into the soil.

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  • 16. 

    If all the nitrogen fixation bacteria died it would be very bad.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    If all the nitrogen fixation bacteria died, it would not necessarily be very bad. While nitrogen fixation bacteria play a crucial role in converting atmospheric nitrogen into a usable form for plants, there are alternative sources of nitrogen such as synthetic fertilizers. Although the absence of nitrogen fixation bacteria could have negative consequences for natural ecosystems and agricultural practices, it would not be catastrophic as there are other ways to provide plants with the necessary nitrogen. Therefore, the statement is false.

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  • 17. 

    Name three factors that can limit dispersal 

    Correct Answer
    Physical barriers
    Climate
    Competition
    Explanation
    Physical barriers, climate, and competition are three factors that can limit dispersal. Physical barriers such as mountains, rivers, or oceans can prevent the movement of individuals from one area to another. Climate, including temperature, rainfall, and seasonal changes, can also affect dispersal by creating unfavorable conditions for certain species. Additionally, competition for resources such as food, water, or territory can limit dispersal as individuals may be unable to find suitable habitats. Overall, these factors act as constraints on dispersal, shaping the distribution and movement of organisms in ecosystems.

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  • 18. 

    How do organisms in each of the three energy roles obtain energy?

  • 19. 

    Why is a food chain a more realistic way of portraying an ecosystem?

  • 20. 

    What roles do producers and consumers play in he carbon and oxygen cycles?

  • 21. 

    Explain the carbon and oxygen cycle

  • 22. 

    Explain the water cycle

  • 23. 

    Explain the nitrogen cycle

Quiz Review Timeline (Updated): Mar 20, 2023 +

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  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 11, 2014
    Quiz Created by
    Ashash024
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