In other Seed-plants the sperms are mere passengers, carried all the way by the pollen-tube; this fact has alone rendered the Angiospermous method of fertilisation through a stigma possible.
In sponges, the cells which become ova or sperms lie scattered in the mid-layer between the ciliated layers which line the cavities and spaces of the organism.
Once more, how is this increased power in that biceps muscle of the oarsman able to impress itself upon the sperms or the ova?
The ova of one animal are, however, fertilized by sperms from another.
On this view, then, the germinal cells, ova, or sperms are the direct and unmodified descendants of an ovum and sperm which have entered into fertile union.
Now, if nothing further took place, all the ova of this same individual containing similar germ-plasm would be identical, and similarly with all the sperms from the same parent.
The union of these similar ova from one parent with similar sperms from another should therefore give rise to similar offspring.
The cells which become sperms divide again and again, and thus produce minute active bodies, adance with restless motion.
The cells which become ova or sperms have never become differentiated into anything else.
During the nuptial flight, a special reservoir, possessed by the queen bee, is stored with sperms in sufficient number to last her egg-laying life.
We have also seen that the ova are cells where storage is in excess; the sperms are cells in which fission is in excess.
The ova and sperms are specially differentiated cells which have, in the division of labour, retained and emphasized the function of developmental reproduction.
In higher forms of life the organs which are set apart for the production of ova or sperms become definite in position and definite in structure.
The ova are fertilized by sperms from a different short-lived individual.
Occasionally, as in the snail, the same organ produces both sperms and ova, but then generally in separate parts of its structure.
These four kinds of eggs may be fertilized either by female-producing sperms or male-producing sperms, as indicated in the diagram (fig.
The female-producing sperms will each contain a white X and the male-producing sperms will each contain an indifferent Y chromosome.
Four sperms result, each with half (haploid) the full number (diploid) of chromosomes.
In consequence there are two classes of sperms in man; female producing containing 24 chromosomes, and male producing containing 23 chromosomes.
When rigid this organ is able to penetrate the female entrance, and there the further stimulation of contact calls out the sperms from their storehouses, the seminal vesicles, and they pass down the channel (the urethra) and are expelled.
Each single one of those minute sperms carries countless hereditary traits, and each consists very largely of nuclear plasm--the most highly-specialised and richest substance in our bodies.
This may be done either by shutting the sperms away from the opening of the womb, or by securing the death of all (instead of the natural death of all but one) of the two to six hundred million sperms which enter the woman.
To kill quickly the ejaculated sperms which would otherwise die and decompose naturally, is a simple matter.
It is estimated that there are somewhere between two and five hundred million sperms in a single average ejaculation.
Wilson succeeded in proving that the sperms possessing this accessory body were destined to form females on fertilisation, while sperms without it form males, the eggs being apparently indifferent.
We had our pick of half a dozen sperms and we took after a bull that seemed promising.
We had run into the biggest herd of sperms that the oldest whaleman on the Scarboro had ever seen.
The baleeners are usually found toward the Arctic or Antarctic regions, while the sperms and their ilk hold to the warm seas.
We killed two small humpedbacks within the week and then came upon sperms again.
I went early to the Institute, where there is grand excitement over Ginkgo; the sperms are just swimming out, and they only do it for a day or two each year.
It is no such easy business to catch them, in 100 seeds you can only get five with sperms at the best of times, and may get one and be thankful.
Hunting Ginkgo sperms nearly all the time; but about 3 on Friday I began to feel so queer and feverish that I went home and took my temperature; it was 103 deg.
Similarly, if we suppose that segregation of ovum and sperm occurs in the female, the sperms must disappear and the ovum would contain no factors derived from the male parent.
Half the eggs, therefore, contain an X chromosome, and half a Y, while all the sperms contain an X chromosome.
In the males, when mature, reduction takes place in the gametes, so that two kinds of sperms are formed, those with N chromosomes and those with N-l chromosomes.
If segregation takes place at the reduction divisions we might suppose that half the gametes formed are sperms and half are ova, and that in the male the latter do not survive but perish and disappear.
In the maturation divisions reduction does not occur, N chromosomes passing to one gamete, none to the other, and the latter perishes so that the sperms all contain N chromosomes.
We can only suppose that the final development of the sperms is the result of the presence of the single X chromosome in the successive generations of male gametocytes before the reduction divisions.
All males are heterozygous for I, but during the segregation of characters at some stage in the formation of the families only the male-producing sperms come to contain the factor I.
It is lacking in all the female-producing sperms formed by the male.
Both eggs and sperms are believed to have been derived from simpler ancestral types of ciliated cells which were similar in structure and closely resembled zoöspores.
Those from the male are called sperms or spermatozoa and those from the female eggs or ova.
Many complicated changes have occurred in the constitution of these eggs and sperms before this stage is reached, but into these we need not enter.
The above statement does not necessarily mean that the germ-plasm carried in the sperms and the ova respectively, cannot be affected in any way.
The rest are germ-cells, which subsequently form the eggs and sperms of the new individual, i.
We may assume that the eggs and sperms have reached such a stage in their life history that they are now mature.
The Sperms stay and fight, and are killed off very fast; for they are a very headstrong family.
We don't have any such nonsense about us; but the Sperms always were a light-headed set.
The Sperms live in warm places; but to us the torrid zone is like a sea of fire, and we don't pass it.
Presently he went on again: "The Sperms live in herds; but the Rights go in pairs, and are very fond of one another.
The zoösperms must enter the ovary as the pollen must enter the ovary of the plant.
Only, with most of the animals, the zoösperms must enter the ovary in order to fertilize the eggs, as is the way of the plants.
And in order that little animals may be born it is quite as necessary that the zoösperms cover or fertilize the eggs, as, with the plants, it is for the pollen to fertilize the seeds.
Only, it is not with the birds as it is with the frogs, for the bird's eggs must be fertilized by the male zoösperms while they are still within the mother bird.
The female lays the eggs first, and just as she is doing so the male places himself in such a position towards her that he can mingle his zoösperms with her eggs as they come out.
Even the humpbacks and common finbacks, both well known in Canadian waters, occasionally surpass the average size of sperms and 'rights.
Old sperms that had once escaped without being badly hurt were always ready to fight again.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "sperms" in a variety of sentences. We hope that you will now be able to make sentences using this word.
