Memory Biome Definition & CharacteristicsVersión en línea Learn about biomes. por Andrea Lecuona Ecosystems A biome is a large area of land that is classified based on the climate, plants and animals that make their homes there. Definition Land-based biomes Water-based biomes Characteristics Biomes contain many ecosystems within the same area. Water-based biomes are called aquatic biomes. Temperatures, precipitation amounts and prevalent organisms characterize the biomes of the world. Land-based biomes are called terrestrial biomes.