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Unformatted text preview: 3-24-08 Notes Exam 3: Friday April 4; Chapters 16 & 17 Genetic engineering for American Chesnutt trees killed by Asian fungus in early 1900s Plant: Terrestrial vs. Aquatic o Photosynthetic o Eukaryotes o Multicellular Adaptations to land (these traits help conserve water) o Lignin in walls allowed plants to form support o Aquatic Plants have no lignin o Cuticle- waxy coats (cacti, aloe) o Stomates o Roots o Shoots o Mycorrhizae Symbiotic associations of fungi and roots (fungi gives h2o and minerals to roots; roots give sugar to fungi) o Elaborate vascular system (Figure 16.4) Phloem- transports sugars Xylem- h2o/ mineral transportations o Gametangia: provide protection for gametes The Origin of Plants from Green Algae o Figure 16.6- Closest Plant relatives (Charophyceans) o Chara o Coleochaete By 475 million years ago there were some terrestrial plants that could survive Figure 16.7- 4 major happenings (1. Gametangia (gamete protecting structures; 2. Larger growth; 3. Embryo + its food; 4. First seeds in ovaries) Figure 16.10 Bryophytes Ferns Gymnosperms (Conifers) ...
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This note was uploaded on 04/08/2008 for the course BISC 104 taught by Professor ? during the Spring '06 term at Ole Miss.
- Spring '06