Herbivory and Biting Mechanisms

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Questions and Answers

Which organisms have evolved macroherbivory?

  • Molluscs (correct)
  • Fish
  • Reptiles
  • Birds

What is a radula?

  • A type of algae
  • A muscularized rasp armed with chitinous teeth (correct)
  • A plant matter
  • A type of fish

What is the main feeding strategy of herbivory?

  • Consumption of microscopic plants
  • Consumption of rocks
  • Consumption of macroscopic plants (correct)
  • Consumption of animals

Which invertebrates have biting and chewing mechanisms?

<p>Molluscs, polychaete worms, arthropods, and sea urchins (A)</p>
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What do polychaetes use to scrape off algae?

<p>An extensible proboscis or pharynx with large chitinous teeth (C)</p>
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What is the definition of herbivory?

<p>Herbivory is the consumption of macroscopic plants.</p>
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What are some invertebrates that have evolved macroherbivory?

<p>Some invertebrates that have evolved macroherbivory include molluscs, polychaete worms, arthropods, and sea urchins.</p>
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What is a radula and how is it used by molluscs?

<p>A radula is a muscularized, belt-like rasp armed with chitinous teeth. Molluscs use the radula to scrape algae off rocks or to tear the leaves off terrestrial plants.</p>
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What do polychaetes use to scrape off algae?

<p>Polychaetes use sets of large chitinous teeth on an extensible proboscis or pharynx to scrape off algae.</p>
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What are the common characteristics of biting and chewing mechanisms in invertebrates?

<p>Biting and chewing mechanisms in invertebrates are often characterized by the development of hard surfaces (e.g., teeth) that powerful muscles manipulate.</p>
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