1 / 3

Lecture 5 Animal Evolution – The Invertebrates

Lecture 5 Animal Evolution – The Invertebrates. a. Turbellarians …Free-Living Flatworm. Most live in seas Few live in freshwater. E.g. Planaria Planaria reproduce asexually by transverse fission??? Transverse fission – body splits in two and each piece re-grows the missing parts.

bairn
Télécharger la présentation

Lecture 5 Animal Evolution – The Invertebrates

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. Lecture 5Animal Evolution – The Invertebrates

  2. a. Turbellarians…Free-Living Flatworm • Most live in seas • Few live in freshwater. • E.g. Planaria • Planaria reproduce asexually by transverse fission??? • Transverse fission – body splits in two and each piece re-grows the missing parts. • Have pharynx-muscular tube which sucks food and expels wastes. • water is regulated by protonephiridia.

  3. Planaria

More Related