. Life and love. Biology; Reproduction. The Division of Labor. 29 suggests the higher forms of life, where the animal or plant is composed, not of one cell, but of many, among which is established a division of labor. When the single-celled organism reproduces, it divides and becomes two, as seen in the amoeba. Each division is a complete individual. In the higher forms of life the creature starts as a single cell. Every living thing, even to man himself, sets out on the life journey, as a single cell. This cell divides, but instead of the two cells thus made separating from each other, they s
. Life and love. Biology; Reproduction. The Division of Labor. 29 suggests the higher forms of life, where the animal or plant is composed, not of one cell, but of many, among which is established a division of labor. When the single-celled organism reproduces, it divides and becomes two, as seen in the amoeba. Each division is a complete individual. In the higher forms of life the creature starts as a single cell. Every living thing, even to man himself, sets out on the life journey, as a single cell. This cell divides, but instead of the two cells thus made separating from each other, they stay together. Each of the two cells then divides again, and the group of cells, instead of separating, stays together. The diagram at the bottom of the page may make clearer how the cell is able to build complex forms. There is seen the single cell, then the cell after division, then a simple thimble-like form built of many cells, then a little ani- mal that grows in the sea, in which the cells have assumed several different Ct^^N,-. forms, and final-. ly a worm-like form in which the creature is but a long tube, with another tube running through the middle. This last form has many different sets of cells doing different work. For, unlike the. 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 Morley, Margaret Warner, 1858-1923. Chicago, A. C. McClurg and Company
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Keywords: ., bookcentury1800, bookdecad, booksubjectreproduction, bookyear1895
