"ovule" is a correct and usable word in written English.
You can use it as a noun to refer to the female reproductive cell of a plant or the egg cell of lower animals. Example sentence: The ovule of the plant was small and round.
The ovulate cones are simpler, with each scale subtending a single ovule and two small scales.
Other features common to most species of these two families include a sheathing leaf base, lack of sepals and petals, bisexual flowers (stamens and carpels in the same flower), and presence of one erect ovule per ovary chamber.
At the micropylar end of the ovule, several archegonia (bottle-shaped female organs) develop, each containing an oosphere ("egg").
Flowers are typically arranged in branched or unbranched racemose inflorescences and are usually bisexual; the female part consists of one to many units, each with only a single ovule.
Following pollination and fertilization, the ovule developed into a seed with an embryo nested in the fleshy female gametophyte, which served as a food source during germination and seedling growth.
Because it is multicellular, the pollen grain is considered to be an immature male gametophyte, but its further development into a sexually mature organism occurs only after it has been shed from the microsporangium and transported as a pollen grain to a megasporophyll specifically, to an ovule, within which the male gametophyte grows to maturity.
The pistil is superior (i.e., positioned above the attachment point of the other flower parts) and generally consists of two fused carpels (ovule-bearing segments) enclosing two locules (chambers), each of which has two to many ovules in two rows along the central axis of the ovary.
The pistil, most often composed of an enlarged basal ovary, a columnar style, and distal stigma, is the ovule-producing organ of the flower.
The ovary which matures as the fruit usually reveals by the number of ovule-containing chambers (locules) the number of carpels it contains.
Pollination, transfer of pollen grains from the stamens, the flower parts that produce them, to the ovule-bearing organs or to the ovules (seed precursors) themselves.
Some e.g., date palms (Phoenix dactylifera) and willows (Salix species)—have become dioecious; that is, some plants produce only "male" (staminate) flowers, with the rest producing only "female" (pistillate or ovule-producing) ones.
