Friday, May 26, 2017

Platyhelminthes


Post your facts directly here in a bulleted format. Questions to get you start: 
  • what do they look like?
  • what makes them an animal? 
  • what do they eat? 
  • where do you find them? 
  • any interesting/unique behaviors? 

11 comments:

  1. They are soft bodied invertebrates and are unsegmented -kate Bernardy

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  2. Over half the known flatworms species are parasitic that can do enormous damage -Kate Bernardy

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  3. Over half the known flatworm species are parasitic that can do enormous damage

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  4. Flatworms feed primarily on protozoa and bacteria, smaller worms and tiny dead animals, dead or alive

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  5. -The stomach is like a sack. The food goes into the sack through the mouth. Once the food is taken into the body, the rest is thrown back out of the mouth. (They have no anus).
    -There are over 20,000 species of flatworms and these can be found living on land and in water - both fresh and marine.
    -They reproduce sexually (having both male and female organs) and asexually by splitting. Each piece that is split off becomes a separate worm.

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  6. They are broken into 3 groups which are found in the oceans, in fresh water, and in moist terrestrial habitats, and a few are parasitic.

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  7. They generally are placed into three classes: Trematoda or flukes, Cestoda or tape worms, and Turbellaria.

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  8. 1. Flatworms can stick its pharynx into their prey.

    2. One Fluke can produce over 500,000 embryos.

    3. Tapeworms, a type of flatworm, can be in sizes longer than a school bus. The longest one found was 90 ft!

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  9. The flatworm reproduction process is hermaphroditic, this means that each flatworm produces eggs and also sperm.

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  10. 1. Platyhelminthes are sometimes used to control invasive species.
    2. Flatworms can glide over surfaces, or the underside of a surface film of water, using small body hairs for movement.
    3. While some forms of flatworms live independently and are free living, there are most who live as parasites and get their food by attacking the bodies of the hosts.

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