Question

Describe reproduction by spores in Rhizopus

Answer 1

Reproduction by the formation of spores is a common method of asexual reproduction in some bacteria and most of the fungi. A spore is a tiny, single-celled asexual reproductive structure that gives rise to a new individual. Spores are usually dispersed with the help of various agents like wind, water, etc. and are capable of surviving for long durations of time even in unfavorable conditions.
Rhizopus is a fungus that reproduces by spore formation. The fungal hyphae give rise to a globular structure known as sporangium. This sporangium gives rise to several spores by repetitive division of its nucleus. Each nucleus gets surrounded by a part of cytoplasm and, thus, develops into a spore.These spores, then, mature inside the sporangium. Once they are fully mature, the sporangium bursts to release these spores in the environment. Since the spores disperse through air, they can land on various sites. These sites may be favourable or unfavourable. During unfavourable conditions, these spores are protected by a tough coat. Once favourable conditions return, they germinate and grow into new hyphae.