This first lesson starts with a recall from KS4 of the outline of the structures and roles of phloem and xylem. The lesson then progresses on to describe their distribution in roots, stems and leaves. The second lesson progresses onto identification of the vascular bundles on micrographs, to look at the structures of the xylem and phloem in detail and describe their internal structures to their function. The lesson concludes with an overview of the role of companion cells.
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£5.00