Flatworms aka Platyhelminthes - PowerPoint PPT Presentation

Loading...

PPT – Flatworms aka Platyhelminthes PowerPoint presentation | free to view - id: 1434e-NWIwM



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Flatworms aka Platyhelminthes

Description:

First group of critters to be made of THREE tissue layers. Have true organs and organ systems. Most of these ... Both male and female organs (hermaphrodite) ... – PowerPoint PPT presentation

Number of Views:206
Avg rating:3.0/5.0
Slides: 10
Provided by: jills78
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Flatworms aka Platyhelminthes


1
Flatworms aka Platyhelminthes
2
  • Body style is very flat
  • First group of critters to be made of THREE
    tissue layers
  • Have true organs and organ systems

3
  • Most of these live in salt water but there are a
    few fresh water species
  • Reproduce both sexually and asexually

4
  • First group of critters to have a type of brain
    called a ganglia
  • Most have bilateral symmetry
  • If you split the head of this critter in two- it
    will re-grow TWO heads last slide

5
Flatworm/ Tapeworms
  • Parasitic- need host to live in
  • Live in the intestines of nearly every
    invertebrate
  • Have long chain of sections called proglottids
    which hold 1000s of eggs

6
Tapeworm scolex
  • Attachment site for worm inside intestine

7
Planarians/ Flatworms
  • Free living
  • Feed on small organisms and dead bodies of large
    organisms
  • Both male and female organs (hermaphrodite)
  • When there is little food, they break down their
    own organs and body parts for food
  • Have a muscular tube called a pharynx that acts
    as a mouth

8
(No Transcript)
9
Regeneration of Planaria
About PowerShow.com