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Ryan Eberhart, Stephen Serrano, Corbin Brosious, Robert Soto

Worms. Ryan Eberhart, Stephen Serrano, Corbin Brosious, Robert Soto. Habitat of Flatworms. Flatworms are photonegative or they don’t like the light. They stay under rocks and debris during the day Live in ponds Lakes Ditches Rivers Streams oceans. Habitat of Roundworms.

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Ryan Eberhart, Stephen Serrano, Corbin Brosious, Robert Soto

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  1. Worms Ryan Eberhart, Stephen Serrano, Corbin Brosious, Robert Soto

  2. Habitat of Flatworms • Flatworms are photonegative or they don’t like the light. • They stay under rocks and debris during the day • Live in ponds • Lakes • Ditches • Rivers • Streams • oceans

  3. Habitat of Roundworms Roundworms are found rarely in harsh habitats like deep ocean trenches and hot springs but more commonly in • Stream • Lakes • Ponds • Rivers

  4. Segmented Worms Habitat They Live in burrows in moist soil under rocks and when it rains they come out of hiding.

  5. Flatworms Importance to Humans • Flatworms have regenerative abilities which provide us with future studies for us to develop that technology • They have a negative interactions with food and ornamental animal life

  6. Roundworms Importance to Humans Roundworms eat termites, fleas, ants, beetles, and deer ticks. They provide nutrients to the soil as they break down organic material.

  7. Segmented Worms Importance to Worms • They are decomposers and help with compost • They eat soil and as they move through the soil loosens allowing dirt and rain to pass through, improving the growth of the plants that root in the soil

  8. Systems • Flatworms: • -Structure: The flatworm has no skeleton.It has tiny bristles called cilla that help make it move, as well has two layers of muscle under the skin. • -Digestion: It has a combination of digestion/excretion system. It takes food in and gets ride of it through the same opening. • Nervous systems: Has a simple nervous system with 2 nerve cords running down either side. Also has 2 simple brains and 2 eye spots to sense light. • -Respiration: Takes in oxygen and has no respiratory system. • -Reproduction: The flatworm reproduces by splitting into 2. When it is spilt up it immediately forms a new worm. • -Appearance: Flatworms can e microscopic or many feet long and generally thin.

  9. Systemscont. • Roundworms: • -Structure: The roundworm has no skeleton. • Digestion: A roundworm has a definite digestive system that runs the length of their bodies. It has a mouth, pharynx, intestine and anus. Excretes through its anus. • Nervous system: A roundworm has two nerve cords that transmit impulses in the roundworm. • -Respiration: Has no formal respiratory system. • -Reproduction: Reproduces sexually. • -Appearance: The roundworm is thin, round and can be up to four feet long.

  10. Systems cont. Segmented Worms: -Structure: The Segmented Worms have no skeleton. It has bristles called setae that help it move. They also have muscles under the skin. -Digestion: It has a digestive systems. It has an esophagus for the food to go down, crop to store the food in, a gizzard that grinds the food down, intestines for the food to pass through and take out nutrients and an anus for the food to come out. -Nervous System: Has a simple brain and nerve cord. -Circulation: Has blood vessels and 5 hearts. -Respiration: It takes oxygen through its skin and gives off carbon dioxide. -Reproduction: Reproduces sexually. -Appearance: Round and segmented and colors range from browns to tans.

  11. Flatworm Characteristics • Flat Bodies • Bilateral Symmetry • Some are Parasitic • Some are Free-living • Exhibits cephalbization

  12. Roundworm Characteristics • Tube shaped • Special digestive organs • Have a gut • Lay eggs for their young • Most have hard spear shaped head • Very flexible but have a strong body cover

  13. Characteristics of a Segmented Worm • 3 Cell layers • Head develops first • Ring like segments cover the whole body • Most common are earthworms and night crawlers • No major muscles

  14. UNUSUAL FACTS ABOUTflatworms Pointy Head • Flatworms have only 1 opening on their body and it leads to the stomach • They eat bacteria, algae, protozoa, and other small invertebrates • They have pointed heads

  15. Unusual facts About Roundworms • Nematodes can lay up to 300,000 eggs per day • The sizes of roundworms range from microscopic to 4 inches long • Most roundworms are parasitic Trichinellaspiralis The roundworm that causes Trichinosis “The Porkworm”

  16. UNUSUAL FACTSABOUT SEGMENTED WORMS • Earthworms have both male and female reproductive organs • Earthworms have 10 hearts • Leeches have suction cups on each end of their body • Sandworms make holes in the ground to capture their prey

  17. Types of Segmented Worms • Earthworms • Night crawlers • Sandworms • Leeches Earthworm Sandworm Leech

  18. Types of Roundworms • Nematodes • Hookworms • Pinworms • Whipworms Hookworm Pinworm Whipworm

  19. Types of Flatworms • Flukes • Tapeworms • Planaria Fluke parasite worm Planaria Tapeworm

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