Lec_11_S07

Lec_11_S07 - Ctenophora Diploblasts Predatory Cilia Male...

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1 Ctenophora • Diploblasts • Predatory • Cilia • Male and female organs – External fertilization Mouth First What are they? Where are they? Why are they important? What has happened over the evolutionary scale of things?
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2 What’s wrong with this figure? The relative abundance of Protostome lineages Basic Facts? Protostomes are monophyletic, bilateral symmetry, coelomate Most diverse and species rich lineages are the Mollusca and the Arthropoda Diversification closely tied to the variety of mouthparts, appendages and the evolution of metamorphosis
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Protostomes play important roles in many ecosystems • Marine vs. terrestrial • Crustaceans and mollusks • Insects and spiders • Can you see the differences? • Can you see the similarities? What features are shared by all protostomes? • Developmental patterns • Symmetry in body plans • Segmentation, all or many? • Why are they a monophyletic group?
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This note was uploaded on 04/24/2008 for the course LS 1 taught by Professor Thomas during the Spring '05 term at UCLA.

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Lec_11_S07 - Ctenophora Diploblasts Predatory Cilia Male...

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