. Elements of biology, with special reference to their rôle in the lives of animals. Biology; Zoology. 3^4 ELEMENTS OF BIOLOGY adult stage in the human intestine only. Such strictly limited adap- tations are frequently associated with degenerative structural changes. The tapeworm, one of the phylum Platyhelminthes, does EMERGENT FORM. PROGLOTTID TESTES GENITAL PORE OVARY CYSTICERCUS UTERUS DISTENDED WITH RIPE EGGS FREE EMBRYO FERTILIZED EGG Fig. 218.—Diao^rammatic representation of the life cycle of the human tape worm, Tcenia solium. (Partly after Kiihn: Grundriss der allgemeinen Zoologie, pu


. Elements of biology, with special reference to their rôle in the lives of animals. Biology; Zoology. 3^4 ELEMENTS OF BIOLOGY adult stage in the human intestine only. Such strictly limited adap- tations are frequently associated with degenerative structural changes. The tapeworm, one of the phylum Platyhelminthes, does EMERGENT FORM. PROGLOTTID TESTES GENITAL PORE OVARY CYSTICERCUS UTERUS DISTENDED WITH RIPE EGGS FREE EMBRYO FERTILIZED EGG Fig. 218.—Diao^rammatic representation of the life cycle of the human tape worm, Tcenia solium. (Partly after Kiihn: Grundriss der allgemeinen Zoologie, published by Georg Theime, Leipzig.) not possess a functional digestive canal, absorbing its food already digested from the food in the intestine of the host. The Tapeworm as an Example of Limited Habitat. The human tapeworm, Tcenia solium (Fig. 218) is one of the class Cestoda of the phylum Platyhelminthes. In its adult stage it is found only in the human intestine. The adult body consists of a modified head termed the scolex, equipped with hooks by which it. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Buchanan, James William, 1888-. New York, London, Harper & brothers


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Keywords: ., bookcentury1900, bookpubl, booksubjectbiology, booksubjectzoology