Sap is clever? Sap ascent for undergraduates investigated with an artificial tree
Entity
UAM. Departamento de Física AplicadaPublisher
American Institute of PhysicsDate
2021-04-30Citation
10.1119/10.0004887
The Physics Teacher 59.5 (2021): 356-359
ISSN
0031-921X (print); 1943-4928 (online)DOI
10.1119/10.0004887Editor's Version
https://doi.org/10.1119/10.0004887Subjects
Artificial tree; Sap ascent; FísicaRights
© 2021 Author(s). Published under an exclusive license by American Association of Physics TeachersAbstract
Water is the essential component in living and its role is particularly important in plants. In fact, the crucial photosynthesis process involves a huge loss of sap by transpiration (around 99% from the total amount recovered from the soil through the plant roots) from the stomas on the leaves. Therefore, a question arises: How could trees raise the sap to heights up to 100 m? In this article we present a simple experimental setup that provides a direct visualization and quantification of the water ascent process against gravity. Moreover, the artificial tree offers analogies with "real" ones that will help undergraduate science students from different areas to investigate the influence of environmental and morphological parameters on the variety of physics phenomena underlying the ascension mechanism
Files in this item
Google Scholar:González-Cámara, Sergio
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Sanz Alférez, Soledad
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Orús Orús, María Isabel
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Ares Fernández, José Ramón
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