Economic growth is an increase in real GDP. It means an increase in the value of goods and services produced in an economy. The rate of economic growth measures the annual percentage increase in real GDP.
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.
The usual asexual spores formed by these fungi are arthrospores, sometimes called oidia. Few species form blastic conidia. In some cases, such as with some rust fungi, up to 4 different types of asexual spore are formed during the life cycle. Oidia can have two functions.