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Diversity In Living Organisms — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceDiversity In Living Organisms3 Marks
Question
Write down four main characters of Platyhelminthes. Give two examples.
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Answer

  1. Bilaterally symmetrical and dorsoventrally flattened animals.
  2. Body thin, soft, leaf-like or ribbon-like.
  3. Digestive cavity (when present) with a single opening, the mouth (anus is absent).
  4. Suckers and hooks are usually present.
  5. Circulatory and respiratory systems and skeleton are absent.
Example: Fasciola (liver-fluke) and Taenia solium (pork tape-worm).

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