How the Plant Produces Seed . get at the nectar without rubbing against stamens and stigma (fig. 99, a).the insect in turn unconsciously renders the plant an important service,that of pollination. Beginning with the work of the great naturalist Darwin, many volumeshave been written about the marvelous structures that various floweringplants have developed in this connection. In many cases the structureof the flower has become pro-foundly modified, and all sorts ofarrangements are present wherebypollination by insects is renderedmore precise and effective. Thisis notably true of the orchids and
How the Plant Produces Seed . get at the nectar without rubbing against stamens and stigma (fig. 99, a).the insect in turn unconsciously renders the plant an important service,that of pollination. Beginning with the work of the great naturalist Darwin, many volumeshave been written about the marvelous structures that various floweringplants have developed in this connection. In many cases the structureof the flower has become pro-foundly modified, and all sorts ofarrangements are present wherebypollination by insects is renderedmore precise and effective. Thisis notably true of the orchids andmembers of the mint example, in the ladys-slipper,a common orchid (fig. 99, b), thebee, which has crowded into thepouch in search of food, mustrub against the stigma when itattempts to escape by the onlyeasy route (indicated in the figureby the arrow). Having previouslyreceived pollen from other flowers,the bee thus brings about pollination. After rubbing against the stigmait also brushes against the stamens, and s
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Keywords: ., bookcentury1900, bookdecade1910, bookidhowplantprod, bookyear1914
