Whole_Plant_Transpiration_Student_version.doc - Transpiration Lab Inquiry Version Objectives \u2022 To understand how water moves from roots to leaves in

Whole_Plant_Transpiration_Student_version.doc -...

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Transpiration Lab Inquiry Version Objectives: • To understand how water moves from roots to leaves in terms of the physical and chemical properties of water and the forces provided by differences in water potential. • To understand the role of transpiration in the transport of water within a plant. • To understand the structures used by plants to transport water and regulate water movement. • To test the effects of environmental variables on rates of transpiration using a controlled experiment. Introduction: Cells and organisms must exchange matter with the environment to grow, reproduce, and maintain organization, and the availability of resources influences responses and activities. For example, water and macronutrients are used to synthesize new molecules, and, in plants, water is essential for photosynthesis. Organisms have evolved various mechanisms for accumulating sufficient quantities of water, ions, and other nutrients and for keeping them properly balanced to maintain homeostasis. In general, animals possess one or more mechanisms, such as those involved in excretion, that let them ingest solutions of nutrients and transport and/or eliminate any excess ions or water. However, plants take a
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