CHAPTER 32

CHAPTER 32 - CHAPTER 32 PLANT STRUCTURE, GROWTH, AND...

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CHAPTER 32 PLANT STRUCTURE, GROWTH, AND DIFFERENTIATION PLANT STRUCTURE AND LIFE SPAN Annuals o Herbaceous plants that grow, reproduce, and die in 1 year or less Biennials o Herbaceous plants that take 2 years to complete their life cycles before dying Perennials o Herbaceous and woody plants that have the potential to live for more than 2 years Dormancy o Organism reduces its metabolic state to a minimum level to survive unfavorable conditions Deciduous o Woody perennials that shed their leaves before winter and produce new stems with new leaves the following spring Evergreen o Woody perennials that shed their leaves over a long period of time o Some leaves are always present Plants have different life history strategies Life history strategies o Characteristic features of an organism’s life cycle, particularly as they relate to its survival and successful reproduction THE PLANT BODY Root system o Generally underground o Absorbs water and dissolved minerals Shoot system o Aboveground portion o Consists of a vertical stem that bears leaves, flowers, and fruits that contain seeds o Photosynthesis takes place The plant body consists of cells and tissues Tissue o Group of cells that forms a structural and functional unit Simple tissues o Composed of only one type of cell Complex tissues
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o Composed of two or more types of cells Ground tissue system o Has a variety of functions, including photosynthesis, storage, and support Vascular tissue system o Responsible for conduction of various substances, including water, dissolved minerals, and food o Functions in strengthening and supporting the plant
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This note was uploaded on 04/04/2008 for the course BIO 101 taught by Professor Martin during the Fall '08 term at Rutgers.

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CHAPTER 32 - CHAPTER 32 PLANT STRUCTURE, GROWTH, AND...

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