Editing Guar (section)

==Biology==
''Cyamopsis tetragonoloba'' grows upright, reaching a maximum height of up to {{convert|2–3|m|ft|0}}. 
It has a main single stem with either basal branching or fine branching along the stem. 
Guar taproots can access soil moisture in low soil depths.<ref name=Undersander/> This [[legume]] develops root nodules with nitrogen-fixing soil bacteria [[rhizobia]] in the surface part of its rooting system.
Its leaves and stems are mostly hairy, depending on the cultivar. Its fine leaves have an elongated oval shape ({{convert|5 to 10|cm|in|0}}) and of alternate position. Clusters of flowers grow in the plant axil and are white to blueish in color. The developing pods are rather flat and slim containing 5 to 12 small oval seeds of {{convert|5|mm|in|frac=4}} length (TGW = {{convert|25-40|g|oz|frac=2}}). Usually mature seeds are white or gray, but with excess moisture they can turn black and lose germination capacity. The chromosome number of guar seeds is 2n=14.<ref name=Uni>[http://bibd.uni-giessen.de/gdoc/2000/uni/p000003/guarbohn.htm "Guarbohne (Cyamopsis tetragonolobus &#91;L.&#93; Taub. &#91;=C. psoralioides DC.&#93;)"] Accessed November 8, 2012.</ref>
The seeds of guar beans have a remarkable characteristic. Its kernel consists of a protein-rich germ (43–46%) and a relatively large endosperm (34–40%), containing large amounts of the galactomannan.<ref name=Mudgil/> This is a polysaccharide containing polymers of [[mannose]] and [[galactose]] in a ratio of 2:1 with many branches.<ref name=Garti>Garti N. and Leser M. E 2001. Emulsification properties of hydrocolloids. Polymers for Advanced Technologies 12: 123–135.</ref> Thus, it exhibits a great hydrogen bonding activity <ref name=Whistler/> having a viscosifying effect in liquids.