Algae Diversity Quiz
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Questions and Answers

What is the primary energy source for most algae?

  • Phagotrophy
  • Photosynthesis (correct)
  • Uptake of organic carbon
  • Osmotrophy
  • Which type of algae has become heterotrophs, relying entirely on external energy sources?

  • Golden algae
  • Unicellular species of green algae (correct)
  • Euglenids
  • Dinoflagellates
  • What is the ultimate source of the photosynthetic machinery in algae?

  • Dinoflagellates
  • Cyanobacteria (correct)
  • Purple sulfur bacteria
  • Green sulfur bacteria
  • Which ancient word is related to the Latin word 'fūcus' meaning 'cosmetic rouge'?

    <p>φῦκος (phŷkos)</p> Signup and view all the answers

    What are the traditional seaweed farming practices strongly associated with?

    <p>East Asia food cultures</p> Signup and view all the answers

    Which of the following is an example of a unicellular microalgae?

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

    From the text, which group of algae includes the giant kelp?

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

    What is the main difference between marine algae and freshwater forms mentioned in the text?

    <p>Presence of distinct cell and tissue types</p> Signup and view all the answers

    According to the text, where did the plastids of green algae originate from?

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

    What is the characteristic reproductive strategy mentioned in the text for some algae?

    <p>Complex forms of sexual reproduction</p> Signup and view all the answers

    What is the primary role of the stem in conducting water and nutrients in mosses?

    <p>To transport water and nutrients to the leaves</p> Signup and view all the answers

    How are the conducting tissues in mosses different from those in vascular plants?

    <p>They are poorly developed and structurally different</p> Signup and view all the answers

    What distinguishes mosses from liverworts, hornworts, and lichens?

    <p>Composed of simple leaves that are generally only one cell thick</p> Signup and view all the answers

    How many species of mosses are approximately present according to the text?

    <p>10000</p> Signup and view all the answers

    Which is the tallest moss in the world according to the text?

    <p>Dawsonia superba</p> Signup and view all the answers

    Which of the following is true about mosses in contrast to vascular plants?

    <p>Mosses have no flowers</p> Signup and view all the answers

    What is the main commercial significance of mosses, as mentioned in the text?

    <p>Main constituent of peat and used for decorative purposes</p> Signup and view all the answers

    What is a distinctive characteristic of moss gametophytes, mentioned in the text?

    <p>Configuration of stems, either simple or branched and upright or prostrate</p> Signup and view all the answers

    What do moss leaves have in common with regards to their anatomy, as stated in the text?

    <p>Presence of nerve that does not run beyond the edge of the leaf tip</p> Signup and view all the answers

    What is the characteristic feature of the early divergent classes Takakiopsida, Sphagnopsida, Andreaeopsida and Andreaeobryopsida with regards to stomata, according to the text?

    <p>They lack stomata completely</p> Signup and view all the answers

    Study Notes

    Algae

    • Primary energy source for most algae is photosynthesis
    • Some algae, like apicomplexans, have become heterotrophs, relying entirely on external energy sources
    • The ultimate source of photosynthetic machinery in algae is cyanobacteria

    Etymology

    • The ancient word 'fucus' is related to the Latin word 'fūcus', meaning 'cosmetic rouge'

    Seaweed Farming

    • Traditional seaweed farming practices are strongly associated with Asia

    Microalgae

    • Chlamydomonas is an example of a unicellular microalgae

    Algal Groups

    • The group of algae that includes the giant kelp is Phaeophyceae

    Algae Characteristics

    • Main difference between marine algae and freshwater forms is the presence of flagella in marine algae
    • Plastids of green algae originated from cyanobacteria
    • Some algae exhibit a characteristic reproductive strategy of alternation of generations

    Mosses

    • Primary role of the stem is to conduct water and nutrients
    • Conducting tissues in mosses are different from those in vascular plants in that they lack xylem and phloem

    Moss Characteristics

    • Mosses are distinguished from liverworts, hornworts, and lichens by their lack of vascular tissue
    • Approximately 12,000 species of mosses exist
    • The tallest moss in the world is Dawsonia

    Moss Differences

    • Unlike vascular plants, mosses do not have a true root system or vascular tissue
    • Main commercial significance of mosses is in the horticulture and landscaping industries

    Moss Anatomy

    • A distinctive characteristic of moss gametophytes is their lack of a true stem
    • Moss leaves have in common a lack of vascular tissue and a simple anatomy

    Early Divergent Classes

    • The characteristic feature of the early divergent classes Takakiopsida, Sphagnopsida, Andreaeopsida, and Andreaeobryopsida is the absence of stomata

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    Description

    Test your knowledge about the large and diverse group of photosynthetic, eukaryotic organisms known as algae. From unicellular microalgae to multicellular forms, this quiz covers various aspects of algae biology and classification.

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