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..
Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..
Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..
Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..
Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..
Human Neurology deals essentially with the nervous system of humans. It also features the various theories put forward b..
Gregor Mendel's studies into Monohybrid and Dihybrid crossing and Charles Darwin's study of evolution and natural select..
