Plant Life Cycle Comparison — a labelled NEET Biology diagram with a definitions lexicon.
Plant Life Cycle Comparison Labelled parts: Bryophyte, Pteridophyte, Gymnosperm, Angiosperm, Sporophyte, Gametophyte, Spore, Sporangia, Protonema, Meiosis, Fertilization, Pollen, Ovule, Flower, Cone, Seed. Non-vascular plants (e.g., mosses, liverworts, hornworts) that lack true roots, stems, and leaves. FYI: Bryophytes are dominant in moist environments and reproduce via spores, requiring water for fertilization (sperm movement). Vascular plants (e.g., ferns and horsetails) that reproduce via spores and lack seeds. FYI: Pteridophytes are the first group of plants to exhibit true vascular tissue (xylem and phloem), making them evolutionarily significant. Vascular plants that produce naked seeds (seeds not enclosed within an ovary). FYI: Examples include conifers (e.g., Pinus, Cycas); they are crucial for forming forests and are highly adapted to arid conditions. Vascular plants that produce seeds enclosed within a fruit (ovary). FYI: Angiosperms are the most evolutionarily advanced group of plants and are responsible for the vast diversity of flowering plants. A specialized structure (sac) that produces and contains asexual spores (spore-producing body). FYI: In plants, the sporangium is the site of meiosis, leading to the formation of haploid spores, which germinate into gametophytes. The process where a haploid male gamete (sperm) fuses with a haploid female gamete (ovum) to form a diploid zygote. This restores the species' characteristic chromosome number. FYI: The formation of the zygote marks the beginning of the embryonic development, and the initial mitotic divisions are called cleavage.