BI111 Chapter Notes - Chapter 27: Cactus, Monocotyledon, Endodermis
Document Summary
Overview of the plant body : almost all plants are photosynthetic autotrophs, devide plant into two sytems, root system (below ground, shoot system (above ground, shoot system above ground, photosynthetic leaves, stems, root systems below ground, nonphotosynthetic roots, plant bodies are dendritic (spreading and branched in form) Functions of shoot system: stems, leaves, buds, flowers, highly adaptive for photosynthesis and positions flowers for pollination, vegetative (nonreproductive) shoot, stem with attached leaves and buds, bud gives rise to extension of shoot or new, branching shoot, reproductive shoot, produces flowers which later develop fruits containing seeds. The plant cell general properties: the most basic part of a plant cell, primary cell wall (surrounding plasma membrane and cell contents, cellulose fibres in matrix of hemicellulose, rigid but flexible, large vacuole (30 80% of internal volume) tonoplast membrane, used for storage and to maintain turgor pressure against the cell wall, plasmodesmata: cytoplasmic connections between adjacent cells.
