英语词汇“plumule”造句的方法、技巧、例句及翻译-英语例句辞典

A single piece of down is called a “plumule,” basically a multidirectional puff. Your down coat could be the product of cruelty 2013-12-15T21:00:00Z

Cotyledons very thick and fleshy, their contiguous faces coherent, remaining under ground in germination; plumule 2-leaved; radicle curved.—Trees or shrubs. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z

The sprout at the end of a seed when it begins to germinate; the plumule in germination; Ð so called from its spiral form. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z

The germ-sheath grows vertically upwards, its stiff apex pushing through the soil, while the plumule is hidden in its hollow interior. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z

Within the cotyledons the primordial leaves are seen, constituting the plumule or first bud of the plant. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z

No plumule or bud appears in the embryo of these two Maples until the seed-leaves have nearly attained their full growth and are acting as foliage-leaves, and until a root is formed below. The Elements of Botany For Beginners and For Schools

Radicle hardly any; cotyledons thick and fleshy, enclosing a well-developed plumule.—Flowers axillary, solitary. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z

Em�bry-o, the little plant forming a part of the seed, usually consisting of caulicle, one or more cotyledons and a plumule. Seeds of Michigan Weeds Bulletin 260, Michigan State Agricultural College Experiment Station, Division of Botany, March, 1910

Finally the plumule escapes, its leaves successively breaking through at the tip of the germ-sheath. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z

For example, the single plumule which develops from a germinating wheat embryo has at its upper end a hundred or more tiny growing points. The Chemistry of Plant Life

Same opened out, to show the thick cotyledons and the little plumule or bud between them. The Elements of Botany For Beginners and For Schools

Embryo like that of Nymphæa on a large scale; cotyledons thick and fleshy, enclosing a plumule of 1 or 2 well-formed young leaves, enclosed in a delicate stipule-like sheath. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z

Cotyledons opened to show the radicle a, and the plumule. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4 "Carnegie Andrew" to "Casus Belli"

The axis, which is differentiated into the plumule directed upward and the radicle downward, is small and straight and it is covered more or less by the edges of the scutellum. A Handbook of Some South Indian Grasses

It is important that the leaves on the primary axis arising from the plumule are examined. Northern Nut Growers Association Thirty-Fourth Annual Report 1943

Nothing would be gained by elevating them, as they never grow out into efficient leaves; but the joint of stem belonging to the plumule lengthens well, carrying up its pair of real foliage-leaves. The Elements of Botany For Beginners and For Schools

Embryo with a single cotyledon, and the leaves of the plumule alternate. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z

The former is a large black and white bird with the head and the upper part of the neck unfeathered, except for numerous short, almost bristle-like plumules. Animal Figures in the Maya Codices

When the seed first thrust its rootlets down into the soil and its plumule up to the sunshine it entered upon a long career. The Investment of Influence A Study of Social Sympathy and Service

The part bearing the tiny leaves was formerly, and is sometimes now, called the plumule, but is generally called the epicotyl, because it grows above or upon the cotyledons. The First Book of Farming

Seedling of same, showing the freshly expanded six cotyledons in a whorl, and the plumule just appearing. The Elements of Botany For Beginners and For Schools

Embryo thick and fleshy, "with a large concealed cavity at the summit, the plumule curved in a groove on the outside." The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z

Oft as morning wreathes my scarf, Fled the last plumule of the Dark, Pants up hither the spruce clerk From South Cove and City Wharf. Poems Household Edition

Here is the sweetest longitudinal section of the tentacle of an Actinia, and here—look at these lovely transverse sections of the plumule of a pea; you can see the primary groups of spiral vessels. The Bacillus of Beauty A Romance of To-day

The infrequency of turning the germinating grain benefits the growth of the roots and the development of the plumule, besides saving much labor. Scientific American Supplement, No. 433, April 19, 1884

It would appear therefore that the cotyledon answers to a minute leaf rolled up, and that a chink through which the plumule grows out is a part of the inrolled edges. The Elements of Botany For Beginners and For Schools

In germination the two fleshy cotyledons of the Gingkgo remain within the shell, leaving the three-sided plumule to pass upward; the young stem bears its leaves in threes. Scientific American Supplement, No. 360, November 25, 1882

Also the questions have brought out the fact that the Bean and Pea have the plumule ready formed in the seed, while the Morning-Glory and Sunflower have not. Outlines of Lessons in Botany, Part I; from Seed to Leaf

As the plumule continued to grow, the tip became more arched, and in the course of six days it emerged through the 2 ½ inches of superincumbent soil, still retaining its arched form. The Power of Movement in Plants

The plumules were blowing off freely now, like snow from the eaves on a windy day in winter. The Lilac Sunbonnet

Same, older, with plumule developed into internode and pair of leaves. The Elements of Botany For Beginners and For Schools

For one small plumule still adrift, The wind-blown dandelion's gift, The fields once blossomy we scour Where the old poets plucked the flower. The Home Book of Verse — Volume 3

They may also be divided into those with and without the plumule. Outlines of Lessons in Botany, Part I; from Seed to Leaf

There can therefore hardly be a doubt that the plumule circumnutates, whilst buried beneath the ground, as much as the pressure of the surrounding earth will permit. The Power of Movement in Plants

The movement no doubt is guided by opposition to the force of gravity, as in the case of the ascent of the plumules of germinating seeds. The Movements and Habits of Climbing Plants

So it is the stem-portion of the plumule which is at first conspicuous and strong-growing. The Elements of Botany For Beginners and For Schools

Thus the main divisions of flowering plants are founded on differences in the embryo—on the number and position of the cotyledons, and on the mode of development of the plumule and radicle. The Origin of Species by means of Natural Selection, 6th Edition

Those with plumules will be seen to have the most abundant nourishment. Outlines of Lessons in Botany, Part I; from Seed to Leaf

By removing the soil a buried epicotyl or plumule was found, with its summit arched abruptly downwards, like the arched hypocotyl of the cabbage previously described. The Power of Movement in Plants

A few or many of the next following leaves are often already present in the seed, and lie enclosed between the cotyledons; in their folded state they are known by the name of plumules. A History of Science — Volume 4

Beginning germination of the Beech, showing the plumule growing before the cotyledons have opened or the root has scarcely formed. The Elements of Botany For Beginners and For Schools

Indeed, the earliest growth which carries the very short caulicle out of the shell comes from the formation of foot-stalks to the cotyledons; above these develops the strong plumule, below grows the stout root. The Elements of Botany For Beginners and For Schools

Vertical section, dividing the embryo, a, caulicle: b, cotyledon; c, plumule. Outlines of Lessons in Botany, Part I; from Seed to Leaf

In the case of Megarrhiza, it is the plumule which breaks as an arch through the tube formed by the confluence of the cotyledon-petioles. The Power of Movement in Plants

Germinating Onion, more advanced, the chink at base of cotyledon opening for the protrusion of the plumule, consisting of a thread-shaped leaf. The Elements of Botany For Beginners and For Schools

A grain cut through the middle in the opposite direction, dividing the embryo through its thick cotyledon and its plumule, the latter consisting of two leaves, one enclosing the other. The Elements of Botany For Beginners and For Schools

Similar section through a seed turned edgewise, showing the thickness of the cotyledons, and the minute plumule between them, i. e. the minute bud on the upper end of the caulicle. The Elements of Botany For Beginners and For Schools

This completely surrounds the plumule and furnishes it with food from the albumen. Outlines of Lessons in Botany, Part I; from Seed to Leaf

Thirdly and lastly, radicles when they first protrude from the seed are always geotropic, and plumules or shoots almost always apogeotropic. The Power of Movement in Plants

Instead of this, they nourish into rapid growth the plumule, which is plainly visible in the seed, as a pair of incipient leaves; and these form the first actual foliage. The Elements of Botany For Beginners and For Schools

Grain of Indian Corn in germination, the ascending sprout is the first leaf of the plumule, enclosing the younger leaves within, at its base the primary root has broken through. The Elements of Botany For Beginners and For Schools

The larger part of it is the cotyledon, thickish, its edges involute, and its back in contact with the albumen; partly enclosed by it is the well-developed plumule or bud which is to grow. The Elements of Botany For Beginners and For Schools

There is a line down the middle, and, if we carefully bend back the edges of the cotyledon, it splits along this line, showing the plumule and caulicle within. Outlines of Lessons in Botany, Part I; from Seed to Leaf

Externally root-hairs are formed on the confluent petioles, either a little above, or on a level with, the plumule. The Power of Movement in Plants

When the cotyledons are hypogean, that is, remain buried in the soil, the hypocotyl is hardly developed, and the epicotyl or plumule rises in like manner as an arch through the ground. The Power of Movement in Plants

In germination the first leaf of the plumule develops only as a sort of sheath, protecting the tender parts within; the second and the third form the first foliage. The Elements of Botany For Beginners and For Schools

The plumule, still enclosed within the tube, was now * 'American Journal of Science,' vol. xiv. The Power of Movement in Plants

Whether the plumule remains buried and dormant for a time in its native country, and is thus protected from the cold of winter, we do not know. The Power of Movement in Plants

Here then the arching of the plumule plays the same part as in the case of the petioles of the Delphinium. The Power of Movement in Plants

With germinating monocotyledonous seeds, of which, however, we did not observe a large number, the plumules, for instance, those of Asparagus and Canna, are straight whilst breaking through the ground. The Power of Movement in Plants

Same in advanced germination: the plumule has developed four or five internodes, bearing single leaves; but the first and second leaves are mere scales, the third begins to serve as foliage; the next more so. The Elements of Botany For Beginners and For Schools

At first they are solid, but after a time become tubular; and the basal part beneath the ground is enlarged into a hollow chamber, within which the young leaves are developed without any prominent plumule. The Power of Movement in Plants

Their petioles are completely confluent, forming a tube which terminates downwards in a little solid point, consisting of a minute radicle and hypocotyl, with the likewise minute plumule enclosed within the base of the tube. The Power of Movement in Plants

This proves that the plumule has an innate or spontaneous tendency to arch itself. The Power of Movement in Plants

单词	plumule
例句	plumule A single piece of down is called a “plumule,” basically a multidirectional puff. Your down coat could be the product of cruelty 2013-12-15T21:00:00Z Cotyledons very thick and fleshy, their contiguous faces coherent, remaining under ground in germination; plumule 2-leaved; radicle curved.—Trees or shrubs. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z The sprout at the end of a seed when it begins to germinate; the plumule in germination; Ð so called from its spiral form. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z The germ-sheath grows vertically upwards, its stiff apex pushing through the soil, while the plumule is hidden in its hollow interior. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z Within the cotyledons the primordial leaves are seen, constituting the plumule or first bud of the plant. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z No plumule or bud appears in the embryo of these two Maples until the seed-leaves have nearly attained their full growth and are acting as foliage-leaves, and until a root is formed below. The Elements of Botany For Beginners and For Schools Radicle hardly any; cotyledons thick and fleshy, enclosing a well-developed plumule.—Flowers axillary, solitary. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Em�bry-o, the little plant forming a part of the seed, usually consisting of caulicle, one or more cotyledons and a plumule. Seeds of Michigan Weeds Bulletin 260, Michigan State Agricultural College Experiment Station, Division of Botany, March, 1910 Finally the plumule escapes, its leaves successively breaking through at the tip of the germ-sheath. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z For example, the single plumule which develops from a germinating wheat embryo has at its upper end a hundred or more tiny growing points. The Chemistry of Plant Life Same opened out, to show the thick cotyledons and the little plumule or bud between them. The Elements of Botany For Beginners and For Schools Embryo like that of Nymphæa on a large scale; cotyledons thick and fleshy, enclosing a plumule of 1 or 2 well-formed young leaves, enclosed in a delicate stipule-like sheath. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Cotyledons opened to show the radicle a, and the plumule. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4 "Carnegie Andrew" to "Casus Belli" The axis, which is differentiated into the plumule directed upward and the radicle downward, is small and straight and it is covered more or less by the edges of the scutellum. A Handbook of Some South Indian Grasses It is important that the leaves on the primary axis arising from the plumule are examined. Northern Nut Growers Association Thirty-Fourth Annual Report 1943 Nothing would be gained by elevating them, as they never grow out into efficient leaves; but the joint of stem belonging to the plumule lengthens well, carrying up its pair of real foliage-leaves. The Elements of Botany For Beginners and For Schools Embryo with a single cotyledon, and the leaves of the plumule alternate. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z The former is a large black and white bird with the head and the upper part of the neck unfeathered, except for numerous short, almost bristle-like plumules. Animal Figures in the Maya Codices When the seed first thrust its rootlets down into the soil and its plumule up to the sunshine it entered upon a long career. The Investment of Influence A Study of Social Sympathy and Service The part bearing the tiny leaves was formerly, and is sometimes now, called the plumule, but is generally called the epicotyl, because it grows above or upon the cotyledons. The First Book of Farming Seedling of same, showing the freshly expanded six cotyledons in a whorl, and the plumule just appearing. The Elements of Botany For Beginners and For Schools Embryo thick and fleshy, "with a large concealed cavity at the summit, the plumule curved in a groove on the outside." The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Oft as morning wreathes my scarf, Fled the last plumule of the Dark, Pants up hither the spruce clerk From South Cove and City Wharf. Poems Household Edition Here is the sweetest longitudinal section of the tentacle of an Actinia, and here—look at these lovely transverse sections of the plumule of a pea; you can see the primary groups of spiral vessels. The Bacillus of Beauty A Romance of To-day The infrequency of turning the germinating grain benefits the growth of the roots and the development of the plumule, besides saving much labor. Scientific American Supplement, No. 433, April 19, 1884 It would appear therefore that the cotyledon answers to a minute leaf rolled up, and that a chink through which the plumule grows out is a part of the inrolled edges. The Elements of Botany For Beginners and For Schools In germination the two fleshy cotyledons of the Gingkgo remain within the shell, leaving the three-sided plumule to pass upward; the young stem bears its leaves in threes. Scientific American Supplement, No. 360, November 25, 1882 Also the questions have brought out the fact that the Bean and Pea have the plumule ready formed in the seed, while the Morning-Glory and Sunflower have not. Outlines of Lessons in Botany, Part I; from Seed to Leaf As the plumule continued to grow, the tip became more arched, and in the course of six days it emerged through the 2 ½ inches of superincumbent soil, still retaining its arched form. The Power of Movement in Plants The plumules were blowing off freely now, like snow from the eaves on a windy day in winter. The Lilac Sunbonnet Same, older, with plumule developed into internode and pair of leaves. The Elements of Botany For Beginners and For Schools For one small plumule still adrift, The wind-blown dandelion's gift, The fields once blossomy we scour Where the old poets plucked the flower. The Home Book of Verse — Volume 3 They may also be divided into those with and without the plumule. Outlines of Lessons in Botany, Part I; from Seed to Leaf There can therefore hardly be a doubt that the plumule circumnutates, whilst buried beneath the ground, as much as the pressure of the surrounding earth will permit. The Power of Movement in Plants The movement no doubt is guided by opposition to the force of gravity, as in the case of the ascent of the plumules of germinating seeds. The Movements and Habits of Climbing Plants So it is the stem-portion of the plumule which is at first conspicuous and strong-growing. The Elements of Botany For Beginners and For Schools Thus the main divisions of flowering plants are founded on differences in the embryo—on the number and position of the cotyledons, and on the mode of development of the plumule and radicle. The Origin of Species by means of Natural Selection, 6th Edition Those with plumules will be seen to have the most abundant nourishment. Outlines of Lessons in Botany, Part I; from Seed to Leaf By removing the soil a buried epicotyl or plumule was found, with its summit arched abruptly downwards, like the arched hypocotyl of the cabbage previously described. The Power of Movement in Plants A few or many of the next following leaves are often already present in the seed, and lie enclosed between the cotyledons; in their folded state they are known by the name of plumules. A History of Science — Volume 4 Beginning germination of the Beech, showing the plumule growing before the cotyledons have opened or the root has scarcely formed. The Elements of Botany For Beginners and For Schools Indeed, the earliest growth which carries the very short caulicle out of the shell comes from the formation of foot-stalks to the cotyledons; above these develops the strong plumule, below grows the stout root. The Elements of Botany For Beginners and For Schools Vertical section, dividing the embryo, a, caulicle: b, cotyledon; c, plumule. Outlines of Lessons in Botany, Part I; from Seed to Leaf In the case of Megarrhiza, it is the plumule which breaks as an arch through the tube formed by the confluence of the cotyledon-petioles. The Power of Movement in Plants Germinating Onion, more advanced, the chink at base of cotyledon opening for the protrusion of the plumule, consisting of a thread-shaped leaf. The Elements of Botany For Beginners and For Schools A grain cut through the middle in the opposite direction, dividing the embryo through its thick cotyledon and its plumule, the latter consisting of two leaves, one enclosing the other. The Elements of Botany For Beginners and For Schools Similar section through a seed turned edgewise, showing the thickness of the cotyledons, and the minute plumule between them, i. e. the minute bud on the upper end of the caulicle. The Elements of Botany For Beginners and For Schools This completely surrounds the plumule and furnishes it with food from the albumen. Outlines of Lessons in Botany, Part I; from Seed to Leaf Thirdly and lastly, radicles when they first protrude from the seed are always geotropic, and plumules or shoots almost always apogeotropic. The Power of Movement in Plants Instead of this, they nourish into rapid growth the plumule, which is plainly visible in the seed, as a pair of incipient leaves; and these form the first actual foliage. The Elements of Botany For Beginners and For Schools Grain of Indian Corn in germination, the ascending sprout is the first leaf of the plumule, enclosing the younger leaves within, at its base the primary root has broken through. The Elements of Botany For Beginners and For Schools The larger part of it is the cotyledon, thickish, its edges involute, and its back in contact with the albumen; partly enclosed by it is the well-developed plumule or bud which is to grow. The Elements of Botany For Beginners and For Schools There is a line down the middle, and, if we carefully bend back the edges of the cotyledon, it splits along this line, showing the plumule and caulicle within. Outlines of Lessons in Botany, Part I; from Seed to Leaf Externally root-hairs are formed on the confluent petioles, either a little above, or on a level with, the plumule. The Power of Movement in Plants When the cotyledons are hypogean, that is, remain buried in the soil, the hypocotyl is hardly developed, and the epicotyl or plumule rises in like manner as an arch through the ground. The Power of Movement in Plants In germination the first leaf of the plumule develops only as a sort of sheath, protecting the tender parts within; the second and the third form the first foliage. The Elements of Botany For Beginners and For Schools The plumule, still enclosed within the tube, was now * 'American Journal of Science,' vol. xiv. The Power of Movement in Plants Whether the plumule remains buried and dormant for a time in its native country, and is thus protected from the cold of winter, we do not know. The Power of Movement in Plants Here then the arching of the plumule plays the same part as in the case of the petioles of the Delphinium. The Power of Movement in Plants With germinating monocotyledonous seeds, of which, however, we did not observe a large number, the plumules, for instance, those of Asparagus and Canna, are straight whilst breaking through the ground. The Power of Movement in Plants Same in advanced germination: the plumule has developed four or five internodes, bearing single leaves; but the first and second leaves are mere scales, the third begins to serve as foliage; the next more so. The Elements of Botany For Beginners and For Schools At first they are solid, but after a time become tubular; and the basal part beneath the ground is enlarged into a hollow chamber, within which the young leaves are developed without any prominent plumule. The Power of Movement in Plants Their petioles are completely confluent, forming a tube which terminates downwards in a little solid point, consisting of a minute radicle and hypocotyl, with the likewise minute plumule enclosed within the base of the tube. The Power of Movement in Plants This proves that the plumule has an innate or spontaneous tendency to arch itself. The Power of Movement in Plants
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