In Rhizopus, plant body is haploid and it is the dominant phase in its life cycle. The plant body is mycelial, coenocytic and branched. Three types of hypae are seen in Rhizopus: stoloniferous hypae, rhizoidal hyphae and sporangiophores. Sporangiophores are erect, aerial and unbranched hyphae which grow upwards in tufts (3-5) from the stolons. They bear terminal sporangia and so are reproductive in function. They bear multinucleate non-motile spores, called sporangiospores, which are haploid in nature and under favourable conditions give rise to new plants.