Chapter 29 and 30

Chapter 29 and 30 - ← Alteration of generation in land...

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Chapter 29 and 30 31/03/2008 13:06:00 Colonization of Earth by land plants  Most diversified into flowering species  Biggest differences in animals o Plant cant run away o life style is different  o plants are autotrophic (photo-auto) o nitrogen from soil and then make them into essential amino acids.  o 70% of medicines in pharmacies first came from plants. Why do plants make medicines that are good for us? o They make them as herbivore deterrents.  o Table 30.1  How Did Plants Evolve  Figure 28.4 o Nodes give ancestors  o Extant is still living  o Ancestral Eukaryote engulfed a autotrophic prokaryote cell. o Viridiaplantae- algae and higher plants.  Figure 29.4 o Ancestral alga gave rise to green algae and plants.  o Charophyceans are closest ancestors of plants  o Shared derived characteristics- something that 2 species have evolved  and that they share but not in other species. 
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Unformatted text preview: ← Alteration of generation in land plants • Sphorophyte is stomite = diploid • Figure 29.6 • Figure 13.6 ← Apical meristem (diploid) • Stem cells • Give rise to more specialized differentiated cells in the leaves and roots. ← Know what a node is. ← Know what a shared derived trait is. ← Ferns were the first to have a vascular system ← Vascular system • Xylem (water minerals) • Phloem (sugar and organic products) ← ← ← Chapter 30: ← Seeds are important : ← Seed plants retain their young: the epithelium layer covered the seed so they aren’t free living like ferns. • Retained in the ovary • Fertilized by a grain or pollen ← Gymnosperms: • Ginkgo- plants with balls and smell bad • Cycads • Gnetum • Conifers (pines) 31/03/2008 13:06:00 ← 31/03/2008 13:06:00 ←...
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Chapter 29 and 30 - ← Alteration of generation in land...

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