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Unformatted text preview: Chapter 24 BIO 1002 2/7/2008 Chapter 24: Plant Anatomy and Nutrient T ransport I. Plant Growth- 2 regions: root system and shoot system- Whole plant doesnt grow, just special regions a. Meristem Cells: undifferentiated embryonic cells (not specialized), 2 types 1. Apical Meristem- found at both ends of plants (roots and shoots)- primary growth , throughout life of plant, increases height 2. Lateral Meristem- ring-like structure in dicots and conifers- Secondary growth , later in life, responsible for thickening of branches and trunks II. Plant Tissue Systems 1. Dermal Tissue System : outside covering a. Epidermis (skin) - covers outside of plant, thin-walled cells with waxy cuticle, to keep water in and bacteria out- Root hairs and leaf hairs are examples b. Periderm- Can replace the epidermis in older woody stems, branches, and trunks- Cork cells: thick-walled cells, waterproof and form the bark 2. Ground Tissue System a. Parenchyma- Thin-walled living cells, main photosynthesizers in shoot and...
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This note was uploaded on 09/22/2009 for the course BIOL 1002 taught by Professor Pomarico during the Spring '08 term at LSU.
- Spring '08