. The germ-cell cycle in animals . Cells. 190 GERM-CELL CYCLE IN ANIMALS All the species of Metazoa may be separated into two groups. The individuals in one group of species. Fig. 56. — Diagram of the reproductive organs of the earthworm, dorsal view. A, B, C, seminal vesicles; N, nerve-cord; O, ovary; OD, ovi- duct ; R, egg sac; <S, spermatheca; SF, seminal funnel; T, testes; VD, vas deferens. (From Marshall and Hurst.) possess only one sort of reproductive organs (male or female) and produce only one sort of germ cells (eggs or spermatozoa); these species are said to be dice-. Please note
. The germ-cell cycle in animals . Cells. 190 GERM-CELL CYCLE IN ANIMALS All the species of Metazoa may be separated into two groups. The individuals in one group of species. Fig. 56. — Diagram of the reproductive organs of the earthworm, dorsal view. A, B, C, seminal vesicles; N, nerve-cord; O, ovary; OD, ovi- duct ; R, egg sac; <S, spermatheca; SF, seminal funnel; T, testes; VD, vas deferens. (From Marshall and Hurst.) possess only one sort of reproductive organs (male or female) and produce only one sort of germ cells (eggs or spermatozoa); these species are said to be dice-. 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 Hegner, Robert William, 1880-1942. New York : The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcells, bookyear1914
