Elementary text-book of zoology, general Elementary text-book of zoology, general part and special part: protozoa to insecta elementarytextbo00clau Year: 1892 J-l OEGANlZATIOy AND DETELOPMEXT OF ANIMALS IN GENEEAI. in the simplest cases, as in the Amcebse and Ehizopoda, by prolon- gations of the sarcode (pseudopodia) suirounding the foi-eign 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
Elementary text-book of zoology, general Elementary text-book of zoology, general part and special part: protozoa to insecta elementarytextbo00clau Year: 1892 J-l OEGANlZATIOy AND DETELOPMEXT OF ANIMALS IN GENEEAI. in the simplest cases, as in the Amcebse and Ehizopoda, by prolon- gations of the sarcode (pseudopodia) suirounding the foi-eign 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 present, which serve the purpose of procuring food (adoral ciliated zone of the Ciliata) (fig. 42). Fig. 42.—Stylonychia mytilua (after Stein) viewed from the ventral surface; Wz, adoral zone of cilia; C, contractile vacuole; N, nucleus; A^'juucle- olus (paranucleus); A, anus.
Size: 905px × 2210px
Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
