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
Platyhelminthes. The phylum name Platyhelminthes literally means flatworms.. Members of this phylum are soft, thin-bodied, leaf or ribbonlike worms, including the familiar planaria of ponds and streams, as well as the flukes and tapeworms parasitic in human and other animal bodies.any species have other hosts between these two, such as fish or frogs. Trematodes usually have a pair of suckers for crawling and clinging to the host's tissues. Many humans are infected with blood flukes, liver flukes, lung flukes, and other trematode parasites of great medical importance.