For example, the allowance for doubtful accounts is a contra asset account, and it is paired with the trade accounts receivable account. When combined, the two accounts show the net amount of cash expected to be received from outstanding accounts receivable.he purpose of a contra asset account is to store a reserve that reduces the balance in the paired account. By stating this information separately in a contra asset account, a user of financial information can see the extent to which a paired asset should be reduced.
From Wikipedia, the free encyclopedia. The flatworms, or Platyhelminthes, Plathelminthes, or platyhelminths (from the Greek ÏÎ»Î±ÏÏ, platy, meaning flat and á¼Î»Î¼Î¹Î½Ï (root: á¼Î»Î¼Î¹Î½Î¸-), helminth- , meaning worm) are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.hese are often called flukes, as most have flat rhomboid shapes like that of a flounder (Old English floc). FlÃ³c they have 11,000 11000, species more than all other platyhelminthes, combined and second only to roundworms among parasites on. metazoans
Hence, the traditional platyhelminth subgroup Turbellaria is now regarded as paraphyletic, since it excludes the wholly parasitic groups, although these are descended from one group of turbellarians. Over half of all known flatworm species are parasitic, and some do enormous harm to humans and their livestock.Schistosomiasis, caused by one genus of trematodes, is the second-most devastating of all human diseases caused by parasites, surpassed only by malaria.rom Wikipedia, the free encyclopedia. The flatworms, or Platyhelminthes, Plathelminthes, or platyhelminths (from the Greek ÏÎ»Î±ÏÏ, platy, meaning flat and á¼Î»Î¼Î¹Î½Ï (root: á¼Î»Î¼Î¹Î½Î¸-), helminth- , meaning worm) are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.