Biology 3484A/B Lecture Notes - Lycopodiopsida, Leptosporangiate Fern, Red Algae
24 Dec 2012
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Document Summary
Angiosperms are the most diverse group of land plants and they comprise 2/3 of earth"s plants. Most flowering plants are eudicot and some are monodicot. Modes of reproduction: asexual reproduction offspring arise from a single parent, without meiosis and fertilization. Offspring are an exact genetic copy of the parent. This occurs in archaea, eubacteria, and single-celled eukaryotes. It sometimes occurs in plants and fungi and it rarely occurs in animals. Sexual reproduction this is the primary method of reproduction for the vast majority of macroscopic life. Meiosis is the production of haploid gametes with half the number of chromosomes. Fertilization is the fusion of two gametes from different individuals, eventually producing an embryo containing the original number of chromosomes. It results in increased genetic diversity within a species, allowing for adaptation to changing environments. Many plants are capable of both sexual and asexual reproduction (ex. vegetative reproduction).
