How To Use Spermatozoid In A Sentence
-
Fructification: zoospores produced from the cell contents of the filaments; resting spores formed from the contents of particular cells after impregnation by ciliated spermatozoids produced in distinct antheridial cells.
Scientific American Supplement, No. 384, May 12, 1883
-
The spermatozoid coalesces with the oosphere, which secretes
Scientific American Supplement, No. 531, March 6, 1886
-
Other adaptations concern the protection of the sexual organs and sporogonia, and the retention of water in the neighbourhood of the archegonia to enable the spermatozoid to reach the ovum.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"
-
Shortly before the archegonium opens, the canal cells become disorganized in the same way as in the bryophytes, and the protoplasm of the central cell contracts to form the egg cell which shows a large, central nucleus, and in favorable cases, a clear space at the top called the "receptive spot," as it is here that the spermatozoid enters.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses
-
Each protuberance bursts, and some of the spermatozoids come in contact with and are absorbed by the oosphere, which then secretes a cell-wall, and after a time germinates.
Scientific American Supplement, No. 531, March 6, 1886
-
In Coleochæte, the male cell is a round spermatozoid, and the female cell an oosphere contained in the base of a cell which is elongated into an open and hair-like tube called the trichogyne.
Scientific American Supplement, No. 531, March 6, 1886
-
The antheridia (Fig. 29, _E_) are hemispherical masses of closely set colorless cells, each of which develops a single spermatozoid which, like the tetraspores, is destitute of cilia, and is dependent upon the movement of the water to convey it to the neighborhood of the procarp.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses
-
In Coleochæte, the male cell is a round spermatozoid, and the female cell an oosphere contained in the base of a cell which is elongated into an open and hair-like tube called the trichogyne.
Scientific American Supplement, No. 531, March 6, 1886
-
In Dudresnaya, on the other hand, the spermatozoid coalesces indeed with the trichogyne, but this does not develop further.
Scientific American Supplement, No. 531, March 6, 1886
-
If a plant with ripe archegonia is placed in a drop of water, with the lower surface uppermost, and at the same time male plants are put with it, and the whole covered with a cover glass, the archegonia and antheridia will open simultaneously; and, if examined with the microscope, we shall see the spermatozoids collect about the open archegonia, to which they are attracted by the substance forced out when it opens.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses
-
In them there are these differences from the above process: the contents of the male cell, represented by the pollen, are not differentiated into spermatozoids, and there is no actual contact between the contents of the pollen tube and the germinal vesicle, but according to Strashurger, there is a transference of the substance of the nucleus of the pollen cell to that of the germinal vesicle by osmose.
Scientific American Supplement, No. 531, March 6, 1886
-
- Botany, male, pollen-bearing organ of flower. antheral, adj. antherozoid, n. male sexual element in lower plants; spermatozoid.
Xml's Blinklist.com
-
Occasionally one of these spermatozoids may be found attached to the trichogyne, and in this way fertilization is effected.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses
-
Reproduction by zoospores formed of the whole contents of a cell, with a crown of numerous cilia; resting spores formed in sporangial cells after fecundation by ciliated spermatozoids formed in antheridial cells.
Scientific American Supplement, No. 384, May 12, 1883
-
- Botany, male, pollen-bearing organ of flower. antheral, adj. antherozoid, n. male sexual element in lower plants; spermatozoid.
Xml's Blinklist.com
