BIS%2C%20Lecture%2025%20%20F2010%20post

BIS%2C%20Lecture%2025%20%20F2010%20post - Fall 2010 Keen...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Fall 2010 Keen Lecture 25. Introduction to Metazoa (8 November) revisiting the eukaryotic tree amoebozoans and slime molds coloniality versus multicellularity Students should be able to: navigate the tree of life outline the requirements of coloniality distinguish coloniality from multicellularity describe an extracellular matrix outline the requirements of multicellularity outline the benefits of multicellularity recognize a choanoflagellate and know how it feeds Ancient Present Time Origin of life Very ancient prokaryotes EUKARYA BACTERIA ARCHAEA Where have we been and where are we going? Land plants Fungi Clicker question a) the presence of two flagella b) the presence of multiflagellate sperm c) the presence of a posterior flagellum d) the presence of a multilayered structure e) the presence of cilia Animals and fungi arose from a common ancestor within the opisthokont clade (single rear flagellum) They are sister to the amoebozoans. Amoebozoans Have lobe-shaped pseudopodia Feed by phagocytosis, living as predators, parasites, or scavengers. Loboseans e x . Acanthamoeba castellani- feeds on cornea Contact lens wearers need to use good hygiene to prevent eye infections caused by Acanthamoeba, an amoeba shown here greatly magnified. (Photo: U.S. Centers for Acanthamoeba, an amoeba shown here greatly magnified....
View Full Document

Page1 / 32

BIS%2C%20Lecture%2025%20%20F2010%20post - Fall 2010 Keen...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online