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Home > All Images > 1999 > August > 25 Aug 1999

Images Dated 25th August 1999

Choose from 14 pictures in our Images Dated 25th August 1999 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.


Section through leaf of marram grass Featured 25 Aug 1999 Print

Section through leaf of marram grass

Marram grass leaf. Coloured scanning electron micrograph (SEM) of a transverse section through a leaf of marram grass, Ammophila arenaria. The leaf surface (epidermis) is covered in a dense wax, which protects the plant against drying conditions. The upper surface of the leaf is highly grooved and covered with single-celled hairs. These hairs are to discourage foraging animals and also reduce air currents and so help prevent evaporation. At the base of each fold is a round vascular bundle containing xylem vessels (large oval spaces) and smaller phloem cells used to transport water and food through the leaf. Magnification: x46 at 5x7cm size. Magnification: x110 at 5x7ins size

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