Word Finder - fertilized

definition

To make (the soil) more fertile by adding nutrients to it.

definition

To make more creative or intellectually productive.

example

to fertilize one's imagination

definition

To cause to produce offspring through insemination; to inseminate.

With the photos in her hands, the fertilized eggs were a thing of the past.

While thus carried about by the host-insect, the female is fertilized by the free-flying male, and gives birth to a number of tiny triungulin larvae.

Here the eggs are fertilized and here they segment so that the young embryos are formed within their mother's 9 body.

The egg consists of a fertilized ovum and a mass of yolk-cells.

C, Transverse section of the The eggs of Limulus are fertilized in the sea after they have been laid.

The eggs are fertilized, practically in the ovary, and develop in situ.

Weismann has also ingeniously argued from the structure of the egg-cell and sperm-cell, and from the way in which, and the period at which, they are derived in the course of the growth of the embryo from the egg - from the fertilized egg-cell - that it is impossible (it would be better to say highly improbable) that an alteration in parental structure could produce any exactly representative change in the substance of the germ or sperm-cells.

Only a small proportion of these get fertilized, and still fewer ever emerge from the egg.

The fertilized ova, provided with yolk and a shell, are next transferred to the "uterus" along which they travel to the exterior.

The female is fertilized by the male and three or four days later lays a single egg - the winter egg - and then dies.

The general view was, that the embryo originated in the ovule, which was in some obscure manner fertilized by the pollen.

The female lays two kinds of eggs - " summer-eggs," which develop without fertilization, and " winter-eggs" or resting eggs, which require to be fertilized.

It may, however, well be that the capacity for wintering in the dry state has physiologically replaced the need for resistent fertilized eggs.

As each city or district had its own Ba'al, the author of its fertility, the " husband " (a common meaning of ba'al) of the land which he fertilized, so there were many Ba'als, and the Old Testament writers could allude to the Ba`alim of the neighbouring Canaanites.

In Peronospora, Saprolegnia, &c., the ends of the branches swell up into sporangia, which develop zoospores in their interior (zoosporangia), or their contents become oospheres, which may be fertilized by the contents of other branches (antheridia) and so form egg-cases (oogonia).

Fertilized egg with the central uninucleate cell (o) surrounded by the oosphere and the fertilizing periplasm (p).

The I, Oogonium (og) with the an5, Fertilized oogonium sur theridial branch (az) applied rounded by two layers of to its surface.

Concerning the second question, the recent investigations of Buchner ascogenous hyphae with their asci represent the sporophyte since they are derived from the fertilized ascogonium.

This remarkable double fertilization as it has been called, although only recently discovered, has been proved to take place in widely-separated families, and both in Monocotyledons and Dicotyledons, and there is every probability that, perhaps with variations, it is the normal process in Angiosperms. After impregnation the fertilized oosphere immediately surrounds itself with a cell-wall and becomes the oospore which by a process of growth forms the embryo of the new plant.

By the segmentation of the fertilized egg, now invested by cell-membrane, the embryo-plant arises.

Parthenogenesis, or the development of an embryo from an egg-cell without the latter having been fertilized has been described in species of Thalictrum, Antennaria and Alchemilla.

Thus in Erythronium and Limnocharis the fertilized egg may form a mass of tissue on which several embryos are produced.

The oosphere is in all cases fertilized while still within the oogonium, the antherozoids being admitted by means of a pore.

Coleochaete sp., fertilized egg tion.

The fertilized egg charged with food reserves rests for a considerable period, surrounded by its cortex, the whole having assumed a reddish-brown colour.

The first effect of fertilization is the occlusion of the trichogyne from the fertilized carpogonium.

The filaments arising from the carpogonia grow into long thin tubes, which fuse with special cells rich in protoplasm contents; and from these points issue isolated tufts of sporogenous filaments, several of which may form the product of one fertilized female cell.

In Naccaria, one of the Gelidiaceae, it is observable that the ooblastema filament, as the tube arising from the fertilized carpogonium has been called, fuses completely with a cell contiguous to the carpogonium before giving rise to the foraging filaments already refered to.

Polysiphonia sp., transverse section through a branch, and at spores arising from fertilized carpogonium.

Even among Bangiaceae the carpospores arise from the fertilized cell by division, while in all other Rhodophyceae the oospore, as it may be called, gives rise to a filamentous structure, varying greatly in its dimensions, epiphytic, and to a large extent parasitic upon the egg-bearing parent plant, and in the end giving rise to carpospores in the terminal cells of certain branches.

The doubling process is provided by the act of fertilization, where an antherozoid with the single number of chromosomes fuses with an oosphere also with the single number to provide a fertilized egg with the double number.

He finds that eight chromosomes appear in karyokinesis in the ordinary thallus cells, but sixteen in the gonimoblast filaments derived from the fertilized carpogonium.

This individuality is the result of the particular selection of qualities it receives from its parents, a selection that obviously differs in different cases, as, save in the case of "identical twins," which are supposed to be the product of a single fertilized ovum, no individual pair of brothers, or pair consisting of brother and sister, are alike.

They enacted the story of his birth and life and death; the Earth, the Mother, is fertilized only by an act of violence by her own child; the representative of the god was probably slain each year by a cruel death, just as the god himself died.

The summer crops (millet, sesame, figs, melons, grapes, olives, &c.) are fertilized by the heavy " dews " which are one of the most remarkable climatic features of the country and to a large extent atone for the total lack of rain for one half the year.

Dickel and others have lately claimed that fertilized eggs can give rise to either queens, workers or males, according to the food supplied to the larvae and the influence of supposed "sex-producing glands" possessed by the nurse-workers.

Weismann, however, doubts these conclusions, and having found a spermaster in every one of the eggs that he examined from workercells, and in only one out of 272 eggs taken from drone-cells, he supports Dzierzon's view, explaining the single exception mentioned above as a mistake of the queen, she having laid inadvertently this single fertilized egg in a drone instead of in a worker cell.

It is believed that from the nature of the cell in which she is ovipositing, the queen derives a reflex impulse to lay the appropriate egg - fertilized in the queen or worker cell, unfertilized in the drone cell, as previously mentioned.

Whether the fertilized egg shall develop into a queen or a worker depends upon the nature of the food.

In Behar it has begun to replace indigo, and some success was achieved in Orissa, Assam and Madras; but jute is a very exhausting crop, and requires to be planted in lands fertilized with silt or else with manure.

The great boundary rivers flow through low-lying valleys fertilized by their overflow or percolation, while a high bank leads up to the central upland, which, though naturally dry and unproductive except where irrigated by wells, has been transformed by various canal systems. This favoured region may be regarded as the granary of upper India.

The ova are fertilized in the genital duct, and before their escape have undergone the earliest stages of segmentation.

In fresh-water culture the eggs thus fertilized may be at once distributed to the waters to be stocked, or they may be kept in special receptacles provided with a suitable stream of water until the fry are hatched, and then distributed, or again they may be reared in the hatchery for several months until the fry are active and hardy.

The earlier advocates of artificial propagation and fish-hatching seem to have been under the impression that the thousands of fry resulting from a single act of artificial propagation meant a corresponding increase in the numbers of edible fish when once they had been deposited in suitable waters; and also that artificial fertilization ensured a greater proportion of fertilized eggs than the natural process.

Of Phanerogams, only the Dryas octopetala covers small areas of the debris, interspersed with isolated Cochlearia, &c., and, where a layer of thinner clay has been deposited in sheltered places, the surface is covered with saxifrages, &c.; and a carpet of mosses allows the arctic willow (Salix polaris) to develop. Where a thin sheet of humus, fertilized by lemmings, has accumulated, a few flowering plants appear, but even so their brilliant flowers spring direct from the soil, concealing the developed leaflets, while their horizontally spread roots grow out of proportion; only the Salix lanata rises to 7 or 8 in., sending out roots I in.

The ova pass out of the mouth and are fertilized externally.

After the body of a spermatozoid has coalesced with the egg-nucleus the latter divides repeatedly and forms a mass of tissue which grows more vigorously in the lower part of the fertilized ovum, and extends upwards towards the apex of the ovum as a peripheral layer of parenchyma surrounding a central space.

In Ephedra helvetica, as described by Jaccard, no proembryo or suspensor is formed; but the most vigorous fertilized egg, after undergoing several divisions, becomes attached to a tissue, termed the columella, which serves the purpose of a primary suspensor; the columella appears to be formed by the lignification of certain cells in the central region of the embryo-sac. At a later stage some of the cells in the upper (micropylar) end of the embryo divide and undergo considerable elongation, serving the purpose of a secondary suspensor.

After the egg-cells have been fertilized by the non-motile male cells they grow into tubular proembryos, producing terminal embryos.

Spener died in 1705; but the movement, guided by Francke, fertilized from Halle the whole of Middle and North Germany.