Another name backers network is stereo or mechanical tissue . Its function is to strengthen the parts of a plant . There are two networks into a network of reinforcing the plant body , which kolenkim dansklerenkim . Different Kolenkim sklerenkim for its constituent cells are also different .
a. Kolenkim
Kolenkim is living cells and are similar to parenchyma and some contain chloroplasts . It is located near the surface and under the epidermis on the stem , petiole , flower stalks , and leaves the parent bone . Kolenkim rarely found in the roots .
Most of the cell wall kolenkim network consists of cellulose compound is booster network in young organs or parts of a plant are soft .
b . Sklerenkim
Sklerenkim network consists of dead cells . In addition to the cell wall containing cellulose , lignin compounds containing sklerenkim network ( the main component of wood ) so that the cells become stronger and harder . Sklerenkim consists of two kinds of fibers or fiber sklerenkima and sklereid or stone cells . Coconut shell is a good example of the parts of a plant that contains fibers and sklereid . Sklereid function is to strengthen adult tissues .
Carrier networks
Transport network carries substances needed by plants . There are 2 kinds of transport networks , namely wood and xylem or phloem vessels or filter vessels or vessels bark .
a. Xylem carries water and dissolved mineral salts from the roots to all parts of the leaf . Xylem has two cell types , namely : dantrakeid trachea . Tracheids cell shape and length of the tapered holes , while the tracheal tube or tubular elements interconnected edges .
b . Phloem carries of photosynthesis from the leaves to all parts of the plant body . In the phloem , there are several kinds of cells capable of carrying food in the form of organic substances from one part to another padatumbuhan it . In addition , there is also a companion cells , which help transport substances . Among the phloem vessels are parenchymal tissue called phloem parenchyma .
c . On certain plant phloem fibers are small , thick-walled lignin so that it can be made rope , for example, is Boehmeria nivea or Rami .
network Cork
This tissue found in many dicotyledonous plants and gymnosperms . Cork tissue function is to protect the other networks in order not to lose a lot of water , given the cork cells that are watertight . On dicots , the network formed by the cork cambium or felogen cork , cork toward the establishment of networks in the form of living cells called feloderma , to the outside in the form of dead cells called felem .
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