Fall In Love With Mother Nature - Know About Aquatic Ecosystems

22 Questions | Total Attempts: 1410

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Fall In Love With Mother Nature - Know About Aquatic Ecosystems

An aquatic ecosystem is an ecosystem in a body of water. Communities of organisms that are dependent on each other and on their environment live in aquatic ecosystems. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems.


Questions and Answers
  • 1. 
    A depression in ocean sediments in the intertidal zone which holds ocean water and supports life, even when the tide goes out, is known as a ___________.
    • A. 

      Marsh

    • B. 

      Abyssal plain

    • C. 

      Coral reef

    • D. 

      Tidal pool

  • 2. 
    A thick layer of sediment covers most of the flat abyssal plains in the ocean.
    • A. 

      True

    • B. 

      False

  • 3. 
    An ________ is found where fresh water of a river meets salt water of an ocean.
  • 4. 
    Freshwater ecosystems make up __________ of the earth's water.
    • A. 

      28%

    • B. 

      97%

    • C. 

      3%

    • D. 

      17%

  • 5. 
    No sunlight passes into the intertidal zone
    • A. 

      True

    • B. 

      False

  • 6. 
    Oceans are always moving because of currents and tides.
    • A. 

      True

    • B. 

      False

  • 7. 
    One of the species that can be found in greater depths is the octopus. They can live in a deeper zone that begins at the edge of the continental shelf and extend to the beginning of the abyssal plain.              This zone is called the____________________.
    • A. 

      Oceanic zone

    • B. 

      Bathyal zone

    • C. 

      Neritic zone

    • D. 

      Hadal zone

  • 8. 
    Organisms that live in rivers are adapted to...
    • A. 

      Lightning strikes

    • B. 

      Strong currents

    • C. 

      Large amount of salt content

    • D. 

      Extreme changes in water temperatures

  • 9. 
    Photosynthesis does NOT happen in aquatic ecosystems.
    • A. 

      True

    • B. 

      False

  • 10. 
    Pick all correct answers about hydrothermal vent communities: 
    • A. 

      Occur along tetonic rifts

    • B. 

      First discovered along the Galapagos rift

    • C. 

      Ecosystem is based on chemosynthesis

    • D. 

      Communities are not thriving

  • 11. 
    Pick all correct answers:Coral reefs _____________________________________.
    • A. 

      Are found in tropical waters

    • B. 

      Do not have great diversity in organisms

    • C. 

      Are created by the skeletons of coral and algae

    • D. 

      Are known as the desert of the sea

  • 12. 
    Pick all correct answers:What can you infer about the adaptations the organisms have that live in the intertidal zone.
    • A. 

      They find protection from waves

    • B. 

      They ALL live in shells so predators will have a hard time eating them

    • C. 

      They are ALL herbivores because they don't have sharp teeth

    • D. 

      They adapt to sudden changes in temperature

  • 13. 
    Select all correct answers about the open ocean:
    • A. 

      Too deep for plants

    • B. 

      Major producers are zooplankton

    • C. 

      Microscopic algae

    • D. 

      Produces 50% of the oxygen on the earth

  • 14. 
    The marine environment that refers to the entire volume of ocean water in the world is referred as the ____________________
    • A. 

      Benthic environment

    • B. 

      Intertidal zone

    • C. 

      Neritic zone

    • D. 

      Pelagic environment

  • 15. 
    The shallowest zones of the benthic environment is called the intertidal zone. This zone is characterized by ______________________.
    • A. 

      Great stability of temperature and water pressure

    • B. 

      Exposure to air when tide goes out

    • C. 

      Lack of sunlight

    • D. 

      The absence of plants and animals

  • 16. 
    What abiotic factors affect aquatic ecosystems?
    • A. 

      Sunlight, temperature, algae, sand, amount of rocks

    • B. 

      Sunlight, temperature, oxygen, salt content, water temperature

    • C. 

      Photosynthesis

    • D. 

      Water depth, temperature

  • 17. 
    What are the types of aquatic ecosystems?
    • A. 

      Streams and ocean

    • B. 

      Salty and fresh

    • C. 

      Freshwater and marine

    • D. 

      Surface zone and deep zone

  • 18. 
    What is a series of long underwater mountain ranges on the ocean floor.  
    • A. 

      Mid-ocean ridge

    • B. 

      Trenches

    • C. 

      Rivers

    • D. 

      Underwater volcanoes

  • 19. 
    _____________ ecosystems are natural resources for salt.
    • A. 

      Marine

    • B. 

      Freshwater

  • 20. 
    __________________ are tiny animals that consume phytoplankton. They are also a food source for larger animals like baleen whales.
  • 21. 
    Mineralized nodules are rich in manganese and sulfur.
    • A. 

      True

    • B. 

      False