The study of the development of any animal can be treated in two ways: either we can trace back from the adult to the very beginning in the ovum, or we can trace forward from the fertilized egg to the adult.
It is absolutely certain that very much the longest part of the animal's life is spent in the larval stage, and that with the maturity of the sexual organs and the production of the fertilized ova the life of the individual ends.
As I was very eager to see what the new crosses would be like, I fertilized the blossoms with a gunshot mixture of pollen from other plants such as the Winkler hazel, the European filbert and the Jones hybrid hazel.
A wind will also increase the danger of the hazels being fertilized by native hazel pollen which may still be circulating in the air and which the flowers may prefer to filbert pollen.
In the spring of 1940, I systematically fertilized numerous pistillate flowers of these plants with a pollen mixture.
His wrongs seemed to have fertilized his generosity, and here we behold the fruit.
Permit me to say that in no condition of society can it be encouraged and fertilized more usefully than among yourselves.
Anemophilous; fertilized by pollen borne by the wind.
Sponges produce eggs and spermatozoa, and the egg when fertilized undergoes segmentation to form a ciliated embryo.
Fertilized by the agency of insects; -- said of plants in which the pollen is carried to the stigma by insects.
One of a class of plants, so called by Lindley, because the ovules are fertilized by direct contact of the pollen.
A fertilized o\'94sphere in the ovule of a flowering plant.
After being fertilized by the access of antherozoids it becomes covered with a cell wall and develops into an o\'94spore, which may grow into a new plant like the parent.
The fertilized egg cell or parent cell, from the development of which the child or other organism is formed.
Either of the last two if left alone would be barren; the male flowers are always so, but the pistillate or female flowers, if fertilized with pollen from perfect-flowered plants, produce fruit.
It is said to be a seedling of the Champion fertilized with the Charles Downing variety.
Inclosing the plants in a frame ensures that all the pistils are fertilized by one or the other of the perfect-flowered varieties that are so fine as to promise a better combination of excellence than yet exists.
Patrick Blair, for instance, claimed that "honey absorbed the pollen," and thusfertilized the ovary.
The numerous and conclusive demonstrations of Darwin, however, have proved that in the competition for existence such self-fertilized offspring quickly yield before the progeny of cross-fertilization.
Infection occurs solely through the passage, direct or indirect, of the youngfertilized females to the skin of a healthy individual.
Finally the nymph leaves the host, molts to form the unspined adult, and without further feeding is fertilized and commences oviposition.
On a subsequent occasion many other flowers were fertilized with their own pollen, and all fell off dead in a few days; whilst some flowers on the same raceme which had been left simply unfertilised adhered and long remained fresh.
Some self-fertilized capsules of a Maxillaria were in a similar state.
The child now has reached the fetal stage, and its living body is made up of myriads of cells all derived from the original fertilized ovum.
Two ova may come from one or different ovaries, or even from one Graafian follicle, be fertilized at the same time and develop synchronously.
Anyhow, the fertilized cell starts to divide regardless of the biologists.
The pronucleus unites permanently with the pronucleus of the ovum, and together they form the Cleavage or Segmentation Nucleus of the fertilized ovum.
The Baigas, a primitive Dravidian tribe of the Central Provinces in India, used to practise a fitful and migratory agriculture, burning down patches of jungle and sowing seed in the soil fertilized by the ashes after the breaking of the rains.
While this is an improvement over the artificial shade, fertilized and thickly planted bed, it is not the way that will bring best and lasting results.
Every one with any experience in such matters knows that if radishes or turnips are planted in rich, old soil that has been highly fertilized they will grow large and will be strong, hot, pithy and unpalatable.
I have found it a number of times on the Chillicothe high school lawn, especially after it was fertilized in the winter.
They are found on dung-hills, hot-beds or wherever the ground has been strongly fertilized and contains the necessary moisture.
There is no special preponderance of self-fertilized or wind-fertilized plants, but everywhere the demand for and evidence of insect life.
As Shute says: "There will come a time when the fertilized ovum will have a highly complex nucleus composed of many different ancestral groups of hereditary units.
The fertilized and mature ovule, the result of sexual reproduction in a flowering plant.
It is a well-known principle of biology that changes in the bodies of human beings during their lifetime (dating from the fertilized egg that produces the individual) are never in any noticeable degree inherited by descendants.
It appears, then, that the larvæ are hatched during the middle or last of June from eggs fertilized in April.
On another Rothamsted field the phosphorus actually removed in fifty-five crops from well-fertilized land is two-thirds as much as the total phosphorus now contained in the plowed soil of adjoining untreated land.
The catkins are tender and become winterkilled in our Northern States, but if the pistillate flowers are fertilized by pollen from some more hardy plant, this purple-leaved filbert is exceedingly prolific.
I have gathered eighty nuts from a small bush in my garden, the flowers of which had been fertilized from another variety in early spring.
Here, instead of the cell which is fertilized by the rounded spermatozoid producing a new plant through the medium of spores, some other cell which is quite distinct from the primarily fertilized cell carries on the reproductive process.
The sexual generation is a small green thalloid structure called a prothallium, which bears antheridia and archegonia, each archegonium having a neck-canal and oosphere, which is fertilized just as in the moss.
Then when it lies on the stigma it develops a long tube, which passes down the style and through the micropyle of the ovule to the germinal vesicles, one of which is fertilized by what is probably an osmotic transference of nuclear matter.
The family is universally fertilized by insects, and some of the flowers are wonderfully adapted for this end.
Petals, too, wither and die when the fertilized ovary, already a mother, begins the slow process of maturing its young and the end of the flowering stage is reached.
The first flower that a bee visits cannot, of course, be cross-fertilized notwithstanding the explosion which results, no matter from what angle the bee attempts to insert its proboscis.
When the dust of this clears away, and it is actually dusty with pollen, the dazed bee is seen to have fertilized with almost instantaneous rapidity the stigma of the exploding flower, which springs violently out of the burst keel.
This consists of a spore case, matured for the most part in the chamber occupied by the fertilized female cell, but ultimately its cap is carried upward.
Finally the stigma, after all the faithful ten are folded back among the petals, comes into its period, and is cross-fertilized by the insects which come from other flowers laden with pollen, as we now know.
So general is this cross-fertilization, so much a part of the economy of nature does it appear to be, that we can only think that there must be in the production of this vast horde of the cross-fertilized some advantage.
But in sea wrack, in Naias, and in ditch grass, all submerged aquatics, the flowers are even fertilizedunder the water.
In the lilac, if insect visitors do not accomplish the work of cross-fertilization, the flower is self-fertilized ultimately by the protruding of the stigma far enough out of the tube to catch some of the remaining pollen grains.
The great majority of them are insect fertilized and are therefore wonderfully colored, and some furnish rich stores of honey.
Darwin’s book, “On the Various Contrivances by Which British and Foreign Orchids Are Fertilized by Insects,” reads like a fairy tale.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "fertilized" in a variety of sentences. We hope that you will now be able to make sentences using this word.
