Fern (Marsilea quadrifolia) rhizome

Fern (Marsilea quadrifolia) rhizome

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Credit: DR KEITH WHEELER/SCIENCE PHOTO LIBRARY

Caption: Fern (Marsilea quadrifolia) rhizome. Light micrograph of a section through a rhizome from an aquatic fern. Rhizomes are modified stems of a plant that usually grow underground. The epidermis (outer layer, red) surrounds the vascular bundle, which consists of phloem sieve tube cells (blue), a ring of metaxylem vessels with large tracheids (white-blue) and the protoxylem (small vessels, white-red). At centre is the pericycle (blue) and pith (red). Magnification: x13 when printed 10 centimetres wide.

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Keywords: anatomical, anatomy, aquatic, biological, biology, botanical, botany, cell, cells, cuticle, endodermal, endodermis, epidermal, epidermis, fern, flora, histological, histology, light micrograph, light microscope, marsilea quadrifolia, metaxylem, nature, no-one, nobody, pericycle, phloem, pith, plant, plants, protoxylem, rhizome, section, sectioned, sieve tube, stem, tissue, tubes, vascular, wildlife, xylem

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