Plant Life Cycle Discussion Plant Life Cycle Discussion Plant Life Cycle Discussion Question Description I’m working on a Biology question and need guidance to help me study. Describe the life cycle of a plant? The life cycles of all plants alternate between two includes both multicellular haploid organisms and multicellular generations of distinct multicellular organisms: gametophytes diploid organisms. The multicellular haploid gametophyte and sporophytes. As shown in the diagram below (using a (“gamete-producing plant”) is named for its production by fern as an example), each generation gives rise to the other, a mitosis of haploid gametes-eggs and sperm—that fuse during process that is called alternation of generations. This type fertilization, forming diploid zygotes. Mitotic division of the of reproductive cycle evolved in various groups of algae but zygote produces a multicellular diploid sporophyte does not occur in the charophytes, the algae most closely (“spore-producing plant”). Meiosis in a mature related to plants. Take care not to confuse the sporophytes produces haploid spores, alternation of generations in plants with the The gametophyte produces reproductive cells that can develop into haploid and diploid stages in the life cycles haploid gametes by mitosis. a new Plant Life Cycle Discussion haploid organism without of other sexually reproducing organisms Gametophyte Gamete from fusing with another cell. Mitotic (see Figure 13.6). Alternation of another plant division of the spore cell generations is distinguished Mitosis Mitosis produces a new multicellular by the fact that the life cycle gametophyte, and the cycle begins again. Alternation of generations: five generalized steps Spore Gamete Two gametes unite (fertilization) The spores develop and form a diploid into multicellular MEIOSIS haploid gametophytes. FERTILIZATION zygote. Zygote 2n The sporophyte produces unicellar haploid spores by meiosis. The zygote develops into a multicellular diploid sporophyte. Кеу Haploid (n) Sporophyte (2n) Mitosis Diploid (2n). Click here to ORDER an A++ paper from our Verified MASTERS and DOCTORATE WRITERS: Plant Life Cycle Discussion The plant starts life as a seed, which germinates and grows into a plant. The mature plant produces flowers, which are fertilised and produce seeds in a fruit or seedpod. The plant eventually dies, leaving seeds which germinate to produce new plants. Annuals take one year to complete their life cycle. Biennials take two years to complete their life cycle, germinating and growing roots and leaves in their first year, flowering, setting seed and dying in their second year. Perennials live for several years after germination. Monocarpic plants produce seeds only once, but may take several years to grow to maturity. The Talipot Palm may live for 60 years or more before it produces flowers and seeds, and it then dies. Order Now
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