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Ovule   Listen
noun
Ovule  n.  (Biol.)
(a)
The rudiment of a seed. It grows from a placenta, and consists of a soft nucleus within two delicate coatings. The attached base of the ovule is the hilum, the coatings are united with the nucleus at the chalaza, and their minute orifice is the foramen.
(b)
An ovum.






Collaborative International Dictionary of English 0.48








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"Ovule" Quotes from Famous Books



... flowers are hermaphrodite, and in many cases they are also self-fertilising. The anthers burst and the contained pollen grains are then shed upon the stigma. When this happens, the pollen cell slips through a little hole in its coat and bores its way down the pistil to reach an ovule in the ovary. Complete fusion occurs, and the minute embryo of a new plant immediately results. But for some time it is incapable of leading a separate existence, and, like the embryo mammal, it lives ...
— Mendelism - Third Edition • Reginald Crundall Punnett

... the ovary, and as they ripen they come to the surface, and when actually ripe, the part of the surface of the ovary to which they come, opens up (like a flower unfolding when in bloom), and they fall out. The ovule we may regard as the human female egg, and one ripens and ...
— The Eugenic Marriage, Vol 2 (of 4) - A Personal Guide to the New Science of Better Living and Better Babies • W. Grant Hague

... discharge arrives at the abdominal orifice of the Fallopian tube, which communicates directly with the abdominal cavity. Some authors state that the end of the tube becomes applied against the ovary by the aid of muscular movement and, so to speak, sucks in the discharged ovule, while others hold that the movements of the vibratile cilia, with which the epithelium of the tubes is furnished, suffice to draw the ovule into its cavity. Figure ...
— The Sexual Question - A Scientific, psychological, hygienic and sociological study • August Forel



Words linked to "Ovule" :   amphitropous ovule, ovular, egg cell, reproductive structure, orthotropous ovule, ovum, nucellus, micropyle



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