Plant Lecture 7 09

Plant Lecture 7 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 Growth Apical (tip) growth also known as primary growth branches can arise from bifurcation of the tip or from lateral meristems primary growth in vascular plants does produce xylem and phloem (in addition to other tissue types) Growth Increase in girth (width) in seed plants occurs from a bifacial vascular cambium produces xylem (inside) and phloem (outside) also known as secondary growth Sporophyte Growth Traits chloroplast DNA inversion megaphylls, m e g a p h y l l s axillary meristem axillary meristem bifurcation bifurcation bifurcation bifurcation none none none many many few few few few NA NA NA some yes apical yes yes apical no yes apical no yes apical no yes apical no yes apical no no NA no yes basal no no...
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Plant Lecture 7 09 - Lecture 2/11 Seed Plants II Growth:...

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