Plant Lecture 8 09

Plant Lecture 8 09 - Lecture 2/11 Seed Plants II Growth:...

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Unformatted text preview: Lecture 2/11 Seed Plants II Growth: mapping growth changes onto the plant tree of life Mapping life-cycle changes onto the plant tree of life Seed plant diversity Angiosperms and Gymnosperms Gymnosperms Cycadophyta Ginkgophyta Coniferophyta Gnetophyta Additional seed plant innovations Swimming sperm Double fertilization yes no no embryo and endosperm no yes no no yes some no some: 2 embryos no yes yes no no yes yes no d o u b l e f e r t i l i z a t i o n s w i m m i n g s p e r m yes no no embryo and endosperm no yes no no yes Yes/no no some: 2 embryos no yes yes no no yes yes no d o u b l e f e r t i l i z a t i o n s w i m m i n g s p e r m x y l e m v e s s e l s a r c h e g o n i a Seed Plant Feature Diversity yes no no embryo and endosperm no yes no no yes Yes/no no some: 2 embryos no yes yes no no yes yes no d o u b l e f e r t i l i z a t i o n s w i m m i n g s p e r m x y l e m v e s s e l s a r c h e g o n i a The curious case of the Gnetophyta Lecture 2/11 Angiosperms...
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This document was uploaded on 04/02/2009.

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Plant Lecture 8 09 - Lecture 2/11 Seed Plants II Growth:...

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