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Planaria (a flatworm)

Planaria (a flatworm). Polycelis felina. Description. P. felina are nonparasitic. They do not suck blood like leeches. are about 1 centimeter long. avoid light. Description. P. felina are flat with heads shaped like an arrow point.

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Planaria (a flatworm)

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  1. Planaria (a flatworm) Polycelis felina

  2. Description P. felina are nonparasitic. They do not suck blood like leeches. are about 1 centimeter long. avoid light

  3. Description P. felina are flat with heads shaped like an arrow point. move by twisting, turning, stretching, and contracting its body.

  4. Food P. falina are carnivores. They eat decaying meat, insects, and larvae.

  5. Method of Feeding P. falina have a feeding tube in the middle of its ventral side. secrete digestive enzymes from a single feeding tube to begin external digestion. suck up food through its feeding tube. eliminate waste through the same tube it eats with.

  6. Digestion P. falina have three germ layers and a single digestive cavity. have branched intestines throughout the body

  7. Planarian Traps

  8. Habitat Some planarians live in saltwater. Some live in fresh water. Some live under logs and in the soil.

  9. Adaptations P. felina secretes a slimy mucus. has cilia on its belly that help it glide on a film of mucus.

  10. Adaptations P. falina have two eye spots that cannot see objects, but only detect the brightness of light.

  11. Adaptations P. falina Take in oxygen and release carbon dioxide by diffusion through its skin. CO2 O2

  12. Adaptations P. felina can regrow lost body parts. if cut in half, can regrow each half into two separate individuals.

  13. Video (Planarian Regeneration and stem cells)

  14. Slides 2-4:https://www.ebiomedia.com/the-biology-classics-planaria-feeding.html Bibliography Slides 3-7:http://en.wikipedia.org/wiki/Planarian Slides 8-9:http://raven.islandwood.org/kids/stream_health/macros/Planaria.html Slide 10-12:http://gardener.wikia.com/wiki/Planaria Slide 1:http://www.uniprot.org/taxonomy/6162 Slide 13: http://mcb.illinois.edu/news/feature/270/ Video: http://www.hhmi.org/biointeractive/planarian- regeneration-and-stem-cells

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