... incomplete flowers missing either stamens or carpels. Within the pollen sacs of an anther, diploid cells called microsporocytes undergo meiosis, each forming four haploid microscopes. Each microspore eventually divides once by mitosis and produces two cells, a generative cell and tube cell. Together, the two cells and their wall constitute a pollen grain, or immature male gametophytes. Ovules from within the chambers of the ovary. One ... older internodes below the shoot apex. This growth is due to both cell division and cell elongation within the internode. Axillary buds have the potent...

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