Cercaria
The free-swimming trematode larva that emerges from its host snail; it may penetrate the skin of a final host (as in schistosoma of man), encyst on vegetation (as in Fasciola), in or on fish (as in Clonorchis), or penetrate and encyst in various arthropod hosts. Body and tail are greatly varied in form, and specialised function is adapted to the particular life cycle demands of each species.
See: sporocyst, redia.
Origin: g. Kerkos, tail
Cercaria The free-swimming trematode larva that emerges from its host snail; it may penetrate the skin of a final host (as in schistosoma of man), encyst on vegetation (as in Fasciola), in or on fish (as in Clonorchis), or penetrate and encyst in various arthropod hosts. Body and tail are greatly varied in form, and..
Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..
Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..
Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..
This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..
Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..
This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..
