The Power of Movement in PlantsD. Appleton, 1888 - 592 oldal |
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affixed apex apheliotropic apogeotropism arched hypocotyl basal bean became bend beneath the horizon blade bowed Brassica oleracea cause caustic cauterised circum circumnutating movement close coty cotyl cotyledons course curvature curved damp darkness deflected described direction diurnal position ellipses epicotyl exposed figure filament was fixed following morning geotropism glass filament ground growing growth heliotropic horizontal glass hypocotyl hypogean illuminated inch in height inch in length inclined lateral light leaf leaves ledons Leguminosa magnified manner ment Mimosa pudica move nearly nocturnal north-east window nutation nyctitropic movements observed original scale Oxalis peduncle perpendicular petiole Phalaris plumule position pulvinus radicles right angles rise rose Sachs seed seed-coats seedlings sensitive shellac shown side sink sleep slightly species squares of card stem stolon stood straight summit temperature terminal leaflet tips traced Trifolium tropism upper surfaces upright upwards vertical glass Vicia faba whilst Würzburg young leaf zigzag zigzag line
Népszerű szakaszok
573. oldal - It is hardly an exaggeration to say that the tip of the radicle thus endowed, and having the power of directing the movements of the adjoining parts, acts like the brain of one of the lower animals...
573. oldal - Echinoeystis, or excited by gravitation the same part bends towards the centre of gravity. In almost every case we can clearly perceive the final purpose or advantage of the several movements.
593. oldal - Cloth, $1.25. THE VARIOUS CONTRIVANCES BY WHICH ORCHIDS ARE FERTILIZED BY INSECTS. Revised edition, with Illustrations. 12mo. Cloth, $1.75.
ii. oldal - Cloth, $1.50. for sale by all booksellers; or sent by mail, post-paid, on receipt of price. New York: D. APPLETON & CO., 1, 8, & 5 Bond Street.
593. oldal - Illustrated. Cloth, $5.00. INSECTIVOROUS PLANTS. 12mo. Cloth, $2.00. MOVEMENTS AND HABITS OF CLIMBING PLANTS.
572. oldal - Finally, it is impossible not to be struck with the resemblance between the foregoing movements of plants and many of the actions performed unconsciously by the lower animals. With plants an astonishingly small stimulus suffices ; and even with allied plants one may be highly sensitive to the slightest continued pressure, and another highly sensitive to a slight momentary touch. The habit of moving at certain periods is inherited both by plants and animals ; and several other points of similitude...
558. oldal - The flowerpeduncles are likewise continually circumnutating. If we could look beneath the ground, and our eyes had the power of a microscope, we should see the tip of each rootlet endeavoring to sweep small ellipses or circles as far as the pressure of the sur1 p.
200. oldal - By continually moving his head from side to side, or circumnutating, he will feel any stone or other obstacle, as well as any difference in the hardness of the soil, and he will turn from that side ; if the earth is damper on one than on the other side, he will turn thitherward as a better hunting-ground. Nevertheless, after each interruption, guided by the sense of gravity, he will be able to recover his downward course and to burrow to a greater depth