| 单词 | root hair |
| 例句 | His white hair was fine and thin as root hair and long enough to brush against the earthen floor. A Dance with Dragons 2011-07-12T00:00:00Z Once the tree roots reach the edge, the leading root hairs grow through but then are pinched by the fabric. Preparing trees to go from green pastures to the concrete jungle 2017-12-18T05:00:00Z Scientists have found a plant gene that drives the growth of root hairs, the tiny structures that help plants find water and nutrients in the soil. Gene required for root hair growth, nitrate foraging found in grasses 2023-09-19T04:00:00Z This particular genus is small and slow, and bears a striking resemblance to plant root hairs. Meet the 486-legged creature found in an L.A. area park 2023-07-13T04:00:00Z A blowup of the root indicates that negative water potential draws water from the soil into the root hairs, then into the root xylem. Fundamentals of Biology 2015-01-01T00:00:00Z Beginning at the first root hair is the zone of cell maturation where the root cells begin to differentiate into special cell types. Biology for AP Courses 2022-06-09T00:00:00Z Often, scientists can get the cellular masses to produce fine root hairs, but the shoots have proved particularly problematic. What legal weed in Canada means for science 2018-10-16T04:00:00Z The team also discovered that plants with long root hairs took up phosphorus better and improved the bean yield by 89%, relative to the variety with shorter root hairs. The race to create super-crops 2016-05-17T04:00:00Z The fungus spreads much farther than a small fir tree’s feeder roots can, and supplants the conifer’s lack of root hairs. Truffle trackers: how dogs and humans help ecology and gastronomy in Oregon 2016-01-10T05:00:00Z Plant roots absorb water from the soil through root hairs and transport it up to the leaves through the xylem. Fundamentals of Biology 2015-01-01T00:00:00Z These fresh rootlets clothed with the velvety root hairs are new, just as the shoots are new that bear the leaves on the ends of the branches. Trees Worth Knowing 2011-10-13T02:00:48.357Z Finally, the tiny root hairs fit into tiny cavities within the climbing surface. Sticky secrets 2010-05-28T07:33:00Z The prolongations from the back of some of the cells are root hairs. The Elements of Botany For Beginners and For Schools The roots are more comfortable, and the tiny root hairs can reach the particles of both kinds of mineral food. Earth and Sky Every Child Should Know Easy studies of the earth and the stars for any time and place In the area of maturation, root hairs extend from the main root and cells are large and rectangular. Fundamentals of Biology 2015-01-01T00:00:00Z Working on the assumption that the killing of germinating fungus spores and root hairs are similar phenomena, juglone was subjected to standardized laboratory tests for fungicidal value. Northern Nut Growers Association Thirty-Fourth Annual Report 1943 The ivy's attachment is further strengthened by hook-like structures that grow on the tips of the root hairs. Sticky secrets 2010-05-28T07:33:00Z Seedling Maple, of the natural size; the root well supplied with root hairs, here large enough to be seen by the naked eye. The Elements of Botany For Beginners and For Schools By means of delicate root hairs which come into contact with particles of soil around which a film of soil water clings. Earth and Sky Every Child Should Know Easy studies of the earth and the stars for any time and place The area of elongation has no root hairs, and the cells are still rectangular, but somewhat smaller. Fundamentals of Biology 2015-01-01T00:00:00Z In Chara they are most evident in the root hairs that fasten the plant to the ground. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses They gain an entrance into the plant through the root hairs. Clovers and How to Grow Them This is because the delicate root hairs cling so closely to the soil grains. The First Book of Farming See here and there how these root hairs have wound their way through the blotter to the soil, their feeding place. The Library of Work and Play: Gardening and Farming. A couple of root hairs project outward from the root. Fundamentals of Biology 2015-01-01T00:00:00Z If the lower part of the stem is carefully examined with a lens, we may detect a number of fine green filaments growing from it, looking like the root hairs, except for their color. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses The actively growing, tender root tips and almost microscopic root hairs close to the tip absorb most of the plant's moisture as they occupy new territory. Gardening Without Irrigation: or without much, anyway The root hairs are absorbing moisture laden with plant food from the surface of the soil particles. The First Book of Farming But the large lumps leave large spaces which no tiny root hair can penetrate. The Library of Work and Play: Gardening and Farming. F, cross-section through a full-grown root, × 25. r, root hairs. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses The root hairs, fastening the plant to the ground, are rows of cells with brown walls and oblique partitions. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses A scientist named Dittmer observed in 1937 that a single potted ryegrass plant allocated only 1 cubic foot of soil to grow in made about 3 miles of new roots and root hairs every day. Gardening Without Irrigation: or without much, anyway In this way water in which plant food is dissolved enters the slender root hairs and rises through the plant. The First Book of Farming I have spoken before about how the root hairs absorb food. The Library of Work and Play: Gardening and Farming. The root hairs are found only near the root tips. The First Book of Farming All the cells of the plant except the root hairs contain large and distinct chloroplasts much like those in the leaves of the moss, and like them usually to be found in process of division. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses The moisture gets into the root hairs by a process called osmose. The First Book of Farming Now this film water is just the form of water that can supply the very slender root hairs without drowning them, that is, without keeping the air from them. The First Book of Farming The root, rootlets and root hairs all go to make up the root-system of a plant. The Library of Work and Play: Gardening and Farming. |
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