Spore facts for kids
The spores of seed plants are single cells that grow into a pollen grain or the gametophyte inside the ovule. The structure of seeds in higher plants is more complicated than spores. The main 'innovation' of seeds is their nutrition for the developing embryo, which spores do not have.
Conidia are asexual, non-motile spores of a fungus; they are also called mitospores due to the way they are generated through the cellular process of mitosis. They are haploid cells genetically identical to the haploid parent, can develop into a new organism if conditions are favorable, and serve in dispersal.
Asexual reproduction in Ascomycetes (the Phylum Ascomycota) is by the formation of conidia, which are borne on specialized stalks called conidiophores. The morphology of these specialized conidiophores is often distinctive of a specific species and can therefore be used in identification of the species.
Bacterial spores are extremely resistant. Spores of tetanus and anthrax, for example, can survive in the soil for many years. The origin of these spores was discovered in the 19th century, when a biologist noticed, under the microscope, a small, round, bright body inside bacterial cells. This survived even when the bacteria were boiled for five minutes. This killed the bacteria, but not the spores. They germinated when conditions were right.p186
Images for kids
Fresh snow partially covers Rough-stalked Feather-moss (Brachythecium rutabulum), growing on a thinned hybrid black poplar (Populus x canadensis). The last stage of the moss lifecycle is shown, where the sporophytes are visible before dispersion of their spores: the calyptra (1) is still attached to the capsule (2). The tops of the gametophytes (3) can be discerned as well. Inset shows the surrounding, black poplars growing on sandy loam on the bank of a kolk, with the detail area marked.
Microscopic view of Equisetum spores
Spore clusters, formed inside sporangia of Reticularia olivacea from pine forests of the Eastern Ukraine.
Spore Facts for Kids. Kiddle Encyclopedia.