Wheat grain. Coloured scanning electron micrograph (SEM) of a section through a grain (seed) of wheat (Triticum sp.). The majority of the seed comprises a store of starch grains (yellow) surrounded by cell walls (grey). Above this is a layer of cells containing protein (green). The entire seed is covered in a seed coat (brown). The starch provides the embryo plant with the necessary energy for germination. Wheat is an important food crop. The grain is usually ground into flour before being used to make bread and other products. Magnification: x600 when printed 10cm wide. (KEYSTONE/SCIENCE PHOTO LIBRARY/EYE OF SCIENCE)
Instructions
COPYRIGHTPFLICHTIG All moral rights asserted. Recolouring or alterationof the image is prohibited without permission.
Our website uses cookies. By using and navigating through the website and its offers, you accept these cookies. Detailed information about the use of cookies and how to delete them can be found in our data privacy statement.
