Biological pigment that contain pigment as well. See conjugated systems for electron bond chemistry that causes these molecules to have pigment. The primary function of pigments in plants is photosynthesis, which uses the green pigment chlorophyll along with several red and yellow pigments that help to capture as much light energy as possible. Other functions of pigments in plants include attracting insects to flowers to encourage pollination. Plant pigments include a variety of different kinds of molecule, including porphyrins, carotenoids, anthocyanins and betalains. All biological pigments selectively absorb certain wavelengths of light while reflecting others. The principal pigments responsible are: Plants, in
Through colour render Through colour render Through colour render is a sand/cement/lime based render that is made from White Portland cement (WOPC) and added pigment to produce a coloured effect that is throughout the body of the material. The pigment is preblended into the product as part of the manufacturing process to produce a prebagged product. Another name for these type of materials is monocouche renders. Various mix designs can be produced in renders according to the published Code of Practice for External Renderings, BS5262 1991. The through colour render market within Europe produces a class 3 mix design as per the Code