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Golding, Yvonne; Edmunds, Malcolm – Journal of Biological Education, 2003
A novel method to investigate the pollen diets of hoverflies is described. The method dispenses with the need for dissection skills or the use of hazardous chemicals thus making it particularly useful for school, college or undergraduate projects and for amateurs. It utilises the properties of the indigestible pollen coat, or exine, which enables…
Descriptors: Foreign Countries, Entomology, Ecology, Research Methodology
Martinez Vilalta, Jordi; Sauret, Miquel; Duro, Alicia; Pinol, Josep – Journal of Biological Education, 2003
In this paper we present a simple set-up that illustrates the mechanism of sap ascent in plants and demonstrates that it can easily draw water up to heights of a few meters. The set-up consists of a tube with the lower end submerged in water and the upper one connected to a filter supported by a standard filter-holder. The evaporation of water…
Descriptors: Foreign Countries, Botany, College Students, Ecology