. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. ORTHOPTEROIDEA (PANORTHOPTERA) 21' division reach the surface, where they continue to divide much more actively in the posterior half of the egg. A few yolk cells remain in the yolk. Later a small, nearly circular germ disk forms at the posterior end of the egg; the nuclei of the cells of the remaining primary epithelium (blastoderm) are widely separated. No gastrula invagination is formed in the embrj^o of
. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. ORTHOPTEROIDEA (PANORTHOPTERA) 21' division reach the surface, where they continue to divide much more actively in the posterior half of the egg. A few yolk cells remain in the yolk. Later a small, nearly circular germ disk forms at the posterior end of the egg; the nuclei of the cells of the remaining primary epithelium (blastoderm) are widely separated. No gastrula invagination is formed in the embrj^o of this termite. At irregular points in the embryonic area, lateral as well as median, some cells are pushed below the surface, and others are separated toward the inner surface of the ectoderm by tangential divisions of its nuclei at am anir ^„^... am. 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 Johannsen, O. A. (Oskar Augustus), 1870-1961; Butt, Ferdinand Hinckley, 1899-. New York, London, McGraw-Hill Book Company, inc.
Size: 1977px × 1264px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
