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Flatworms

By, Jase Franke. Flatworms. What are Flatworms?. Flatworms have flattened bodies with a definite head and tail. Some Flatworms, such as Turbellarians (class : Turbelaria ) are free-living, while others such as, Flukes are parasitic. Flatworms.

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Flatworms

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  1. By, Jase Franke Flatworms

  2. What are Flatworms? • Flatworms have flattened bodies with a definite head and tail. • Some Flatworms, such as Turbellarians (class: Turbelaria) are free-living, while others such as, Flukes are parasitic.

  3. Flatworms • Flatworms show bilateral symmetry which means that only one plane through the midline of the central axis will divide the animal into similar right and left halves.

  4. Turbellarians • Turbellarians which are another type of Flatworm have sensory receptors that can detect light, chemicals, and movement. • Sense organs in the head of the worm is known as cephalization. • Turbellarians can range from a few milimeters to 20 inches. • Flatworms move by secreting slime trails of mucus which they glide, using their cilia to propel them.

  5. Flatworms Hunting • Turbellarians are carnivorous and they feed on small invertebrates that they locate with chemical-detecting organs called chemoreceptors.

  6. Caught Prey • Once the worm extends a muscular tube called the pharynx it pumps out enzymes onto the prey, and sucks out all the body fluids.

  7. Excretion • When the worm is excretes metabolic wastes which is diffused from the animals skin.

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