How to use plumules in a sentence? Find typical usage patterns (collocations)/phrases/context for "plumules" and check conjugation/comparative form for "plumules". Mastering all the usages of "plumules" from sentence examples published by news publications.
Geese are larger than ducks so their down plumules are larger and typically geese from colder climates such as central and northern Europe have the largest plumules.
|
|
Radicles or plumules were excised from the embryos and similarly incubated.
|
|
The second group includes down feathers, or plumules, which are softer and shorter than contour feathers.
|
|
While their down is loose it is collected by hand. It is very rare and, of course, expensive. The larger individual plumules are what gives the greater loft. The only way to get down of this quality is by careful hand selection which is the major factor in its scarcity.
|
|
However, they have been identified as having at least four different types of feather: in addition to the traditional feather, the emperor has afterfeathers, plumules, and filoplumes. The afterfeathers are downy plumes that attach directly to the main feathers and were once believed to account for the bird's ability to conserve heat when under water; the plumules are small down feathers that attach directly to the skin, and are much more dense in penguins than other birds; lastly the filoplumes are small (less than 1 cm long) naked shafts that end in a splay of fibers— filoplumes were believed to give flying birds a sense of where their plumage was and whether or not it needed preening, so their presence in penguins may seem inconsistent, but penguins also preen extensively. The emperor penguin has the largest body mass of all penguins, which further reduces relative surface area and heat loss. They also are able to control blood flow to their extremities, reducing the amount of blood that gets cold, but still keeping the extremities from freezing.
|
|
Fledglings are born with cryptic plumules that help them blend in with the surrounding ground material to avoid predation. It takes approximately eight days for the coloration of this plumage to start to resembling that of the adults. They hatch with their eyes partially opened and stay motionless during the first day. The first flights or short glides begin after the 12th day under the vigilance of an adult (it is not specified if the care is shared by parents or is it just one), displacement of fledglings increases with the time.
|
|
The thick filaments tend to appear 'stiffer' than thin filaments, and the thin filaments tend to lie parallel to each other but at angles to nearby thick filaments. These properties suggest that the individual feathers consisted of a central quill (rachis) with thinner barbs branching off from it, similar to but more primitive in structure than modern bird feathers. Overall, the filaments most closely resemble the "plumules" or down-like feathers of some modern birds, with a thick central quill and long, thin barbs. The same structures are seen in other fossils from the Yixian Formation, including Confuciusornis.
|
|
An epicotyl is important for the beginning stages of a plant's life. It is the region of a seedling stem above the stalks of the seed leaves of an embryo plant. It grows rapidly, showing hypogeal germination, and extends the stem above the soil surface. A common misconception is that the epicotyl, being closer to the apex of the plant, is the first part to emerge after germination - rather, the hypocotyl, the region of the stem between the point of attachment of the cotyledons and the root - forms a hook during hypogeal germination and pushes out of the soil, allowing the more delicate tissues of the plumules and apical meristem to avoid damage from pushing through the soil.
|
|
No results under this filter, show 8 sentences.