A Level Biology Revision "The Structure and Functions of Xylem" скачать в хорошем качестве

A Level Biology Revision "The Structure and Functions of Xylem"

You can find all my A Level Biology videos fully indexed at   freesciencelessons.co.uk/a-level-revision-...   In this video, we look at the structure and functions of xylem. First I show you how xylem vessels are formed and discuss the role of xylem vessels. We look at the function of lignin within the xylem vessel walls. We then look at xylem fibres and parenchyma cells. Image credits: Xylem vessels with lignin rings   commons.wikimedia.org/wiki/file:xylem_vess...   Berkshire Community College Bioscience Image Library, CC0, via Wikimedia Commons Xylem Vessels   commons.wikimedia.org/wiki/file:herbaceous...   Berkshire Community College Bioscience Image Library, CC0, via Wikimedia Commons Xylem fibres   commons.wikimedia.org/wiki/file:woody_dico...   Berkshire Community College Bioscience Image Library, CC0, via Wikimedia Commons Large image of root cells   commons.wikimedia.org/wiki/file:herbaceous...   Berkshire Community College Bioscience Image Library, CC0, via Wikimedia Commons Stem vascular bundles   commons.wikimedia.org/wiki/file:herbaceous...   Berkshire Community College Bioscience Image Library, CC0, via Wikimedia Commons Leaf vascular bundle   commons.wikimedia.org/wiki/file:angiosperm...   Berkshire Community College Bioscience Image Library, CC0, via Wikimedia Commons