1 / 10

Wormlike Animals

SBI 3U Ms.Zafar October 15 th. Wormlike Animals. Wormlike Animals. Invertebrates Some have a coelom. We are going to study…. Platyhelminthes (flatworms) Nematodes (roundworms) Annelids (segmented worms). Phylum Platyhelminthes. Flatworms Acoelomates Bilateral symmetry

gus
Download Presentation

Wormlike Animals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. SBI 3U Ms.Zafar October 15th Wormlike Animals

  2. Wormlike Animals • Invertebrates • Some have a coelom

  3. We are going to study… • Platyhelminthes (flatworms) • Nematodes (roundworms) • Annelids (segmented worms)

  4. Phylum Platyhelminthes • Flatworms • Acoelomates • Bilateral symmetry • Cephalization • True organs • Free-living and parasitic

  5. Platyhelminthes – Free Living Flatworms • Small • “Blind” digestive system • Nervous tissue • Hermaphroditic • Ex: Planaria

  6. Platyhelminthes – Parasitic Flatworms • Dependent upon host • Little sensory reception • Digestive system absent in some • Highly developed reproductive system • Example: Flukes and Tapeworms

  7. Phylum Nematoda • Roundworms • Pseudocoelomates • Complete digestive tract • Simple nervous system • No respiratory or circulatory system • Free-living & Parasitic

  8. Phylum Nematoda: Parasitic Roundworms • Attack plants & animals • Some help humans • Ex: Ascaris

  9. Phylum Annelida • Segmented worms • Coelomates • Ex: Earthworms

  10. Earthworms and Ecology • Agriculture

More Related