Just like the shell of a clam, a pearl is composed of calcium carbonate (mainly aragonite or a mixture of aragonite and calcite). in minute crystalline form, which has been deposited in concentric layers. The ideal pearl is perfectly round and smooth, but many other shapes, known as baroque pearls, can occur.
Rimula is a genus of fungi in the Helotiales order. The relationship of this taxon to other taxa within the order is unknown (incertae sedis), and it has not yet been placed with certainty into any family. ^ Lumbsch TH, Huhndorf SM. (December 2007). Outline of Ascomycota â 2007.
Palatine uvula, which is commonly referred to as uvula, is a small, conical projection that hangs down from the soft palate, at the back of the throat. It is made of connective tissue containing racemose glands and muscle fibers.vula Function. Uvula is the fleshy mass of tissue that dangles from the posterior of the soft palate. When we swallow solid food or fluids, uvula and the soft palate move upwards to close off the nasopharynx, thereby preventing food from entering the nasal cavity.