Asexually reproduce definition biology. An important form of fission is binary fission, where the parent organism is replaced by two daughter organisms, because it literally divides in two. Learning Objectives Distinguish between natural and artificial methods of asexual reproduction in plants. Layering is a method in which a stem attached to the plant is bent and covered with soil. Advantages of asexual reproduction include an increased rate of maturity and a sturdier adult plant. Reproduction occurring without the sexual union of male and female gametes. Journal of Theoretical Biology. Key Terms layering: Five Types of Asexual Reproduction. Fragmentation is seen in many organisms.