Life Cycle of a Flowering Plant essays

Life Cycle of a Flowering Plant essays Almost all flowering plants are known as 'Angiosperms', which means plants whose seed production comes from flowering. Seeds are packaged within a fruit to be transported away from parent plant. Angiosperms are vascular plants containing xylem and phloem in bundled Plant cells, unlike animals they have multicellular haploid and multicellular diploid stages in there cycle. By the process of meiosis, diploid sporophyte cells produce haploid spores. Each haploid spore undergoes mitotic division creating multicellular haploid gametophyte. Gametes are the by-product of multicellular haploid gametophyte by process of mitosis. However gametes are not the direct result of mitotic division. Diploid sporophyte is the creation of two gametes fusing together. During fertilization, multicellular haploid cells change to multicellular Meiosis is the process of cell division (reproduction). Process of meiosis a cell undergoes two divisions. A cell divides to produce two cells each new cell holds DNA, the two new cells then divide again. It is not concerned about creating a working cell. Cells genetics are shuffled during meiosis, therefore the first division of cells do not have equal quantity of chromosomes, and it is in the second division of cells that chromosomes are divided equally in the new cells. There are two stages to meiosis. First stage of meiosis is like mitosis, where a cell divides into two both containing equal measures of DNA. Where in mitosis cells share equal DNA, meiosis a crossing-over is when the cells DNA exchange genes. These genes get mixed up producing the opposite perfect duplicate cells like mitosis. Second stage of meiosis DNA that remains in the cell condenses to form short chromosomes. All pairs of chromosome have a centromere. Centrioles begin at opposite sides of the cell. In metaphase ll, all chromosomes are lined in the middle of the cell and the centrioles are...