"Fruit is definitely on the maintenance diet. It's on the lifestyle diet."

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The development of the fruit from flower starts from the stage of fertilization and continues which is described as below:

Flowers are the true reproductive organs of flowering plants. The "male" part is the stamen or androecium, which produces pollen (male gametes) in anthers. The "female" organ is the carpel or gynoecium, which contains of egg (female gamete) and is site of the fertilization. While the majority of flowers are perfect and hermaphrodite (having both male and female parts in the same flower structure), flowering plants have developed numerous morphological and also physiological mechanisms actually to reduce or prevent self-fertilization. Heteromorphic flowers have short carpals and long stamens, or other wise vice versa, so animal pollinators cannot easily transfer pollen to the pistil (receptive part of the carpel). Homomorphic flowers could employ a biochemical (physiological) mechanism called self-incompatibility to discriminate between self- and non-self pollen grains. In other species, the male and female parts are morphologically separated, developing on different flowers.

Fruits are so varied in form and development, that it is difficult to devise a classification scheme that includes all known fruits. It will also be seen that many common terms for seeds and fruit are incorrectly applied, a fact that complicates understanding of the terminology. Seeds are ripened ovules; fruits are the ripened ovularies or carpels that contain the seeds. To these two basic definitions can be added the clarification that in botanical terminology, a nut is a types of fruits and not another term for seed.

The main growth of the fruits from the seeds include three main parts which includes,

pointer Fertilization
pointer Embryology
pointer Fruits and Seeds

pointer Fertilization
During period of the fertilization the embryo-sac lies in a close proximity to the opening of micro Pyle, into which the pollen-tube has penetrated, the separating cell-wall becomes absorbed, and the male or sperm-cells are ejected into the embryo-sac. Guided by the synergetic one male-cell passes into the oosphere with which it fuses, the two nuclei uniting, while the other fuses with the definitive nucleus, or, as it is also called, the endosperm nucleus. This is remarkable double fertilization as it has been known, although only recently discovered, has been proved to take part place in widely-separated families, and both in Monocotyledons and of a prothallium after a cause following the reinvigorating union of the polar nuclei.

This view is still maintained by those who are differentiate two acts of fertilization within the embryo-sac, and regard that of egg by the first male-cell, as the true or generative fertilization, and that of polar nuclei by the second male gamete as a vegetative fertilization which gives a stimulus to development in correlation with the other. If, on the other hand, the endosperm is the product of an act of fertilization as definite as that giving rise to the embryo itself, we have to recognize that twin-plants are produced within the embryo-sac—one, the embryo, which becomes the angiosperm us plant, the other, the endosperm, a short-lived, undifferentiated nurse to assist in the nutrition of the former, even as the subsidiary embryos in a pluri-embryonic Gymnosperm may facilitate the nutrition of the dominant one. If this is so, and the endosperm like the embryo is normally the product of a sexual act, hybridization will also give a hybrid endosperm as it does a hybrid embryo, and herein (it is suggested) we may have the explanation of the phenomenon of xenia observed in the mixed endosperms of hybrid races of maize and all other plants, regarding which it has only been possible hitherto to assert that they were indications of the extension of the influence of the pollen beyond the egg and its product. This may not, however, explain the formation of fruits intermediate in the size and colour between those of crossed parents. The signification of a coalescence of the polar nuclei is not explained by these new facts, but it is noteworthy that second male-cell is said to unite sometimes with the apical polar nucleus, the sister of the egg, before the union of this with the basal polar one.

pointer Embryology
The result of fertilization is meant development of the ovule into the seed. By the segmentation of the fertilized egg, now invested by the cell-membrane, the embryo-plant arises. A varying in number of transverse segment-walls on transform it into a pro-embryo—a cellular row of which the actual cell nearest of the micro Pyle becomes attached to the apex of the embryo-sac, and hence fixes the position of developing embryo, while terminal cell is projected into its cavity. In Dicotyledons shoot of the embryo is truly derived from the terminal cell of the pro-embryo, from the next cells the root arises, and the remaining ones form the suspensor. In many Monocotyledons the term terminal cell are formed the cotyledon portion alone of the shoot of the embryo, its axial part and in the root being derived from the adjacent cell; the cotyledon is thus a terminal structure and the apex of the primary stem a lateral one—in condition in the marked contrast with that of the Dicotyledons. In some Monocotyledons, however, it is the cotyledon is not really terminal. The primary root of an embryo in all Angiosperms points towards the micro Pyle. In the developing embryo at the end of the suspensor grows out to a varying extent into the forming endosperm, from which by surface absorption it derives good material for growth; at the same time the suspensor plays a direct part as the carrier of nutrition, and may even develop, where perhaps no endosperm could be formed, special absorptive "suspensor roots" which invest the developing embryo, or pass out into the body and coats of the ovule, or even into the placenta.
Formation of the endosperm starts, as has been stated, from the endosperm nucleus. Its segmentation always begins before that of egg, and thus there is timely preparation for the nursing of the young embryo. If in the extension to contain the new formations within it the embryo-sac remains very narrow, endosperm formation proceeds upon the lines of a cell-division, but in wide embryo-sacs the endosperm is first of all formed as a layer of naked cells around the wall of the sac, and only on the gradually acquires a pluricellular character, forming a tissue filling the sac. The function of the endosperm is primarily that of nourishing the embryo, and basal on position in the embryo-sac places it favorably for the absorption in food material entering the ovule. Its duration varies with its precocity of the embryo.
Some deviations from usual course of development may be noted. Parthenogenesis, or the development of an embryo from an egg-cell without the latter having been fertilized, has been described in species of Thalictrum, Antennary and Aliceville. Polyembryony is generally associated with the development of the cells other than the egg-cell. Thus in Erythronium and Limnocharis the fertilized egg may form a mass of tissue on that several embryos are produced. Isolated cases show that any of cells within the embryo-sac may exceptionally form an embryo, e.g. the synergetic is in species of Mimosa, Iris and Alliums and in the last-mentioned but the antipodal cells also. In Coelebogyne (Euphorbiaceous) and in Funkia (Liliaceous) polyembryony results from an adventitious production of embryos from the cells of the nucleus around the top of the embryo-sac. In a species of Alliums, embryos have been found in all developing same individual from the egg-cell, synergies, antipodal cells and cells of the nucleus. In two Malayan species of Balanophora, the embryo is developed from a cell of the endosperm, which is always formed from the upper polar nucleus only, the egg apparatus becoming disorganized.

pointer Fruits and Seeds
As the development of embryo and endosperm proceeds within the embryo-sac, its wall enlarges and the commonly absorbs the substance of the nucleus (which is likewise enlarging) to near its outer limit, and combines with it and the integument to form the seed-coat; or the whole nucleus and even the integument may be absorbed. In some plants the nucleus is not always absorbed, but itself becomes a seat of deposit of reserve-food constituting per sperm which may coexist with endosperm, as in the water-lily order, or may alone form a food-reserve for the embryo, as in Cana. Endospermic food-reserve has evident advantages over perispermic, and the latter is comparatively rarely found and only in non-progressive series. Seeds in that endosperm or per sperm or both exist are commonly called aluminous or endospermic, those in which are neither is found are termed exalbuminous or exendospermic. These terms, are extensively used by systematizes, only refer, however, to the grosser features of the seed, and indicate the more or less evident occurrence of a food-reserve; many so-called exalbuminous seeds show to microscopic examination a distinct endosperm which may have other than a nutritive function.
The presence or absence of the endosperm, its relative to the amount when present, and the position of the embryo within it, are very much valuable characters for the distinction of orders and groups of orders. Meanwhile the ovary wall has to develop form the fruit or per carp, the structure of which is closely related with the manner of distribution of the seed. Frequently the influence from of fertilization is felt beyond the ovary, and other parts of the flower take part of formation in the fruit, as the floral receptacle in the apple, strawberry and others.

The character of the seed-coat bears a definite relation to that of the fruit. Their function is the twofold one of protecting the embryo and of aiding the in dissemination; they could also directly promote germination. If the fruit is a dehiscent one and seed is therefore soon exposed, the seed-coat has to provide for the protection in the embryo and may also have to secure dissemination. On the other hand, indehiscent fruits discharge these functions for the embryo, and the seed-coat is very slightly developed. With multi-seeded fruits, multiple grains of pollen could be necessary for syngamy with each ovule. The process is easy to visualize if one looks at maize silk that is the female flower of corn. Pollen from the tassel male flower) falls on the straight sticky external portion of the silk, and then pollen tubes grow up the silk to the attached ovule. The dried silk remains inside the husk of the ear as the seeds mature, so one can carefully remove the husk to show the floral structures. The development of the flesh fruit is the proportional to the percentage of fertilized ovules.

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