Algae Classification
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Questions and Answers

What is unique about cyanobacteria?

  • They are eukaryotes
  • They are found only in freshwater
  • They are classified as algae
  • They are prokaryotes (correct)
  • What is true about all types of algae?

  • They are all prokaryotes
  • They are all classified as plants
  • They are all eukaryotes, except cyanobacteria (correct)
  • They are all found in saltwater
  • Why are cyanobacteria classified as algae?

  • Because they are photosynthetic
  • Because they are prokaryotes
  • Because they are similar in structure to algae (correct)
  • Because they are eukaryotes
  • What is the main difference between cyanobacteria and other algae?

    <p>Their cell structure</p> Signup and view all the answers

    Which of the following is NOT true about cyanobacteria?

    <p>They are eukaryotes</p> Signup and view all the answers

    Where can algae grow unexpectedly?

    <p>Tree trunks</p> Signup and view all the answers

    What type of organisms can algae form symbiotic relationships with?

    <p>Only non-photosynthetic organisms</p> Signup and view all the answers

    What is an example of a symbiotic relationship formed by algae?

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

    Which of the following is NOT a place where algae can grow?

    <p>Ocean sediments</p> Signup and view all the answers

    What type of relationship can algae form with mollusks?

    <p>Symbiotic relationship</p> Signup and view all the answers

    What is the primary result of algal blooms?

    <p>Production of toxins</p> Signup and view all the answers

    What is a consequence of the disruption of natural aquatic ecosystems by algal blooms?

    <p>Changes to the food chain</p> Signup and view all the answers

    What type of organisms are responsible for algal blooms?

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

    What is an economic consequence of algal blooms?

    <p>Increased costs of water treatment</p> Signup and view all the answers

    What is the overall effect of algal blooms on aquatic ecosystems?

    <p>Disruption of the ecosystem</p> Signup and view all the answers

    What is one of the conditions that they can endure?

    <p>Range of temperatures</p> Signup and view all the answers

    Which of the following is NOT a condition that they can endure?

    <p>High pressure</p> Signup and view all the answers

    What is another condition that they can endure?

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

    Which of the following is a condition that they can endure?

    <p>Oxygen or carbon dioxide concentrations</p> Signup and view all the answers

    What is one of the conditions that they can endure?

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

    What are the main sources of nitrogen that contribute to environmental issues?

    <p>Fertilizers used in agriculture and animal manures</p> Signup and view all the answers

    What is the primary component of fertilizers and animal manures that affects the environment?

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

    What is the main human activity responsible for the increase in nitrogen levels in the environment?

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

    What is the result of excessive nitrogen in the environment?

    <p>Environmental pollution</p> Signup and view all the answers

    What is the primary source of nitrogen in animal manures?

    <p>Animal feed</p> Signup and view all the answers

    Study Notes

    Characteristics of Algae

    • Algae are eukaryotes, except for cyanobacteria, which are prokaryotes
    • Can endure a range of temperatures, oxygen or carbon dioxide concentrations, acidity, and turbidity

    Unusual Growth Locations

    • Found growing on tree trunks, animal fur, snow banks, and hot springs

    Symbiotic Relationships

    • Can form symbiotic relationships with non-photosynthetic organisms, including:
      • Ciliates
      • Sponges
      • Mollusks
      • Fungi (as lichens)

    Algal Blooms

    • Result from the rapid growth of certain microalgae
    • Lead to the production of toxins and disruption of natural aquatic ecosystems
    • Increase the costs of water treatments
    • Caused by human activities, including:
      • Use of fertilizers in agriculture
      • Animal manures rich in nitrogen

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    Description

    Learn about the classification of algae, including the exception of cyanobacteria, also known as blue-green algae, which are prokaryotes.

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