Elementary botany . Fig. no. Root of germinating pumpkin, showing region of elongation just back of the tip. hours later, growth had taken place as shown in the middlefigure. At 9 on the following day, 15 hours later, thegrowth is represented in the lower one. Similar experimentsupon a number of seedlings give the same result: the region ofelongation in the growth of the root is situated a little distanceback from the tip. Farther back very little or no elongationtakes place, but growth in diameter continues for some time, aswe should discover if we examined the roots of growing pump-kins
Elementary botany . Fig. no. Root of germinating pumpkin, showing region of elongation just back of the tip. hours later, growth had taken place as shown in the middlefigure. At 9 on the following day, 15 hours later, thegrowth is represented in the lower one. Similar experimentsupon a number of seedlings give the same result: the region ofelongation in the growth of the root is situated a little distanceback from the tip. Farther back very little or no elongationtakes place, but growth in diameter continues for some time, aswe should discover if we examined the roots of growing pump-kins, or other plants, at different periods. 50. Movement of region of greatest elongation.—In theregion of elongation the areas marked off do not all elongateequally at the same time. The middle spaces elongate mostrapidly and the spaces marked off by the 6, 7, and 8 mm markselongate slowly, those farthest from the tip more slowly than theothers, since elongation has nearly ceased here. The spacesmarked off between t
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Keywords: ., bookauthoratk, bookcentury1900, bookdecade1900, booksubjectbotany
