. Life and love. Biology; Reproduction. ;6 Life and Love. certain cells, which, though they may be powerless in themselves, by union with the cells given off by the opposite sex, have power to produce offspring like the parents. But even in creatures which have achieved con- siderable complexity of structure, and which repro- duce normally by the production of egg and sperm cells there is sometimes a form of reproduction which recalls the simple method of the amoeba. A certain ringed marine worm, for instance, merely sprouts, as it were, from the side or the end, and there is formed 'â â '^^yf
. Life and love. Biology; Reproduction. ;6 Life and Love. certain cells, which, though they may be powerless in themselves, by union with the cells given off by the opposite sex, have power to produce offspring like the parents. But even in creatures which have achieved con- siderable complexity of structure, and which repro- duce normally by the production of egg and sperm cells there is sometimes a form of reproduction which recalls the simple method of the amoeba. A certain ringed marine worm, for instance, merely sprouts, as it were, from the side or the end, and there is formed 'â â '^^yfi sometimes quite an intricate net- work of those strange crea- tures. Another sea- worm, again, when a certain length has been reached, develops a head at one joint and a tail at the preceding one, and when this devel- opment is completed the creature is composed of two perfect worms which fall apart. Sometimes several of these new worms are formed. TVfi ^^^*%£a^-w j^gf^^g separation takes place, the re- sult being a chain of forming worms. In the upper registers of the scale of life this budding of the parent into offspring which do not. 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
