28-plantevolBoutl

28-plantevolBoutl - E. P: Gnetophyta 1. Ephedra 2. Gnetum...

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Biology 3 Lecture: Evolution of Plants II (SBM9: Ch 28) © 2011 copyright Marta D. de Jesus I. Some of extinct groups that help link ferns to seed plants A. Progymnosperms eg: Archaeopteris B. Seed ferns eg: Emplectopteris II. Non-Flowering Seed plants A. In general 1. sporophytes 2. major innovations/changes a. cones b. g’phytes are more reduced than before 1) male (micro)gametophyte 2) female (mega)gametophyte nice diagrams with photos: http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio 102/Bio 102 lectures/Seed Plants/seed plants.htm (Bio 102 website has other useful info on other groups) c. sperm dispersal d. produce seeds 1) Tissues from: (i) 2N (s’phyte) (ii) 1N (megagametophyte) (iii) 2N (zygote/embryo) 2) as embryo grows
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cotyledons B. P: Cycadophyta C. P: Ginkgophyta D. P: Coniferophyta xerophytic adaptations
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Unformatted text preview: E. P: Gnetophyta 1. Ephedra 2. Gnetum 3. Welwitschia III. P: Anthophyta angiosperms A. In general B. sporophyte C. gametophytes 1. male microgametophyte 2. female megagametophyte D. make flowers 1. tissues a. 2N (sphyte) b. 1N (gphyte) c. fertilization-process d. 2N zygote e. 3N endoperm E. cotyledons 1. 1 cotyledon 2. 2 cotyledons 3. older groups F. inside flower 1. anthers 2. ovary 3. pistil G. ovary becomes H. important vascular tissue change Other good sources of Botany images: University of Wisconsin Botany http://botit.botany.wisc.edu/ Botanical Society of AmericaOnline Image Collection http://images.botany.org/ Smithsonian Institution http://botany.si.edu/plantimages/ Life Cycles in Spanish (from Spain) http://www.unioviedo.es/bos/Asignaturas/Botanica/1.htm...
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28-plantevolBoutl - E. P: Gnetophyta 1. Ephedra 2. Gnetum...

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