![]() Such stages of larvae include rediae, sporocysts, miracidia, and cercariae.Thumbnail description Mostly free-living flatworms with a cellular epidermis that is usually ciliated the mouth leads to a stomodeal pharynx and incomplete gut Evolution and systematics Such a life cycle has larvae in stages of four as far as the numbers are concerned. Phylum Platyhelminthes have a life cycle that is complicated in nature.Phylum Platyhelminthes possess a nervous system whose structure is that of a ladder thereby implying the organization of such a nervous system in a proper and appropriate manner as far as its whole structure is concerned.Phylum Platyhelminthes have the power to regenerate themselves in the manner as desired, thereby implying fertilization without any dependence at the internal level along with the sexual reproduction of gamets through fusion and the asexual reproduction by means of fission with regard to regeneration.The body of Phylum Platyhelminthes lacks a proper cavity filled with fluid, thereby being termed acoelomates, taking into account the space between the wall of the body and the track pertaining to digestion, considering the lack of such a tract as mentioned earlier. ![]() It leads to various interruptions with reference to the processing of food in a continuous manner as far as effectiveness is concerned. Therefore, they are reliant on their mouths not only for the intake of food but also for the elimination of wastes that have not been digested accordingly. Phylum Platyhelminthes also do not have a proper digestive system and are also devoid of the anus. ![]() Hence, through the means of diffusion, nutrients and oxygen are facilitated to pass through their bodies accordingly.
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