The biochemical and physical duet of the mother and the fetus in the formation of the placenta is one of the most carefully orchestrated phenomena in fetal development. It represents the cooperation of two distinct individuals to form a single structure that protects one and enables the genes of the other to live on.
This cycle is known as alternation of generations. The spores of seed plants, however, are produced internally and the megaspores, formed within the ovules and the microspores are involved in the formation of more complex structures that form the dispersal units, the seeds and pollen grains.
Home What fungi are Reproduction Asexual Reproduction. FUNGI REPRODUCING ASEXUALLY BY MEANS OF SPORANGIA. Sporangiospores are spores that are produced in a sporangium (plural: sporangia). A sporangium in fungi (but not mosses and some other organisms) is simply a cell containing spores.he Zygomycota are terrestrial organisms producing non-motile sporangiospores. The sporangia in this group are usually at the tips of specialized hyphae called sporangiophores. Probably the most difficult feature of the zygomycotan sporangium for most students to understand is the bulb-like structure called a columella.