Reproduction in lower and higher plants very short note
Sexual Reproduction: It involves fusion of two compatible gametes or sex cells. All organisms reach to the maturity in their life before they can reproducs sexually. In plants, the end of juvenile vegetative phase marks the begining of the reproductive phase and can be seen easily in the higher plants at the time of flowering. The flower is specialized reproductive structure of a plant in which sexual reproduction takes place. The function of flower is to produce haploid gametes and to ensure that fertilization will take place. Typical flower consists of four different whorls viz. calyx, corolla androecium and gynoecium. Sexual reproduction involves two major events viz. meiosis and fusion of gametes form diploid zygote and the production of genetically dissimilar offsprings. Variations useful from the point of view of the survival and the evolution of species, over the time. ...