1 / 14

PYLUM ANNELIDA – segmented worms

PYLUM ANNELIDA – segmented worms. Biology 111. Annelids. Representative species : common ____________. Annelids – Key characteristics!. Have a _________ – fluid filled body cavity surrounded by a mesoderm (room for organs)

terry
Download Presentation

PYLUM ANNELIDA – segmented worms

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. PYLUM ANNELIDA – segmented worms Biology 111

  2. Annelids Representative species: common ____________

  3. Annelids – Key characteristics! • Have a _________ – fluid filled body cavity surrounded by a mesoderm (room for organs) • Have a ____________ (membrane in the coelom in which all organs are attached) • Have 2 sets of muscle tissue. 1. body wall muscles – to move the worm called…..______ and 2. digestive system muscles to move food through the system called……______

  4. Class Oligochaeta: Earthworms ``It may be doubted whether there are any other animals which have played so important a part in the history of the world as the earthworm.`` -Charles Darwin, 1881 http://mypeoplepc.com/members/arbra/bbb/id19.html

  5. Class Oligochaeta: Earthworms • 2500 species • Many more cell layers than flat and round worms • Have _________ to carry gases to and from body tissues (circulation) • Blood in earthworms contains a red protein ___________ (just like in us!) • Have __ hearts near the anterior end

  6. Earthworms cont… • More complex _____________ system than other worm phyla • They consume dirt (food and sand particles) via mouth, __________, esophogus, and then stores it in the __________. • After storage, food moves to the __________ to be ground down, then to the intestine for digestion and absorption into the blood stream. • Undigested food moves out the ________

  7. Earthworm digestion http://www.youtube.com/watch?v=FK-Oo7NwPiQ

  8. Earthworms cont… • _______ are bristles that aid in mvmt.; each segment has 4 setae (except first and last ones) • Complex NS • Reproduce _________ • Both sexes….Hermaphrodites

  9. Class _______________ • First FDA approved animal for medicinal purpose: leeches (blood sucking parasites) – natural anticoagulant Hirudin http://www.youtube.com/watch?v=cePKpt5nOJ0

  10. Class __________ – marine worms

  11. Worm Grunting/Charming http://www.youtube.com/watch?v=VjRxUVLxdYI http://www.youtube.com/watch?v=IGviTYCFksE

More Related