Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote elementarytextbo01clau Year: 1892-1893 54 ORGANIZATION AND DEVELOPMENT OF ANIMALS IN GENERAL. in the simplest cases, as in the Amoebae and Rhizopodn, by prolon- gations of the sarcode (pseudopodia) surrounding the foreign body (fig. 41). In the Infusoria, which are covered by a firm cuticle, there is a central semi-fluid mass of sarcode (endoplasm), which is distinct from the more compact peripheral layer of sarcode (ecto- plasm), and which receives the nutrient substances through the mouth
Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote elementarytextbo01clau Year: 1892-1893 54 ORGANIZATION AND DEVELOPMENT OF ANIMALS IN GENERAL. in the simplest cases, as in the Amoebae and Rhizopodn, by prolon- gations of the sarcode (pseudopodia) surrounding the foreign body (fig. 41). In the Infusoria, which are covered by a firm cuticle, there is a central semi-fluid mass of sarcode (endoplasm), which is distinct from the more compact peripheral layer of sarcode (ecto- plasm), and which receives the nutrient substances through the mouth and digests them. Rows of larger cilia are pre&ent, which serve the purpose of procuring food (adoral ciliated zone of the Ciliata) (fig. 42).
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