Biospheres is a colony structure in Master of Orion.
Biospheres allow colonies to better control the environmental conditions under which they live, allowing the population to use the less tolerable areas of a planet. Biospheres produce Research and Food.
The Unofficial Code Patch changes the effect. Instead of producing food and research, it increases the planet's max population by two, similar to the biospheres in Master of Orion II: Battle at Antares.