In, 1898 the Russian cytologist S. G. Navashin discovered double fertilization in angiosperms, which consists in the union of a sperm-ucleus with an egg cell nucleus and the union of a second sperm nucleus with the nucleus of an endosperm-producing cell.
Bioculture is the combination of biological and cultural factors that affect human behavior. Bioculture is an area of study bounded by the medical sciences, social sciences, landscape ecology, cultural anthropology, biotechnology, disability studies, the humanities, and the economic and global environment.
biome-a major biotic community characterized by the dominant forms of plant life and the prevailing climate. biotic community, community - (ecology) a group of interdependent organisms inhabiting the same region and interacting with each other. large community of plants and animals that occupies a distinct region defined by its climate and dominant vegetation. Grassland, tundra, desert, tropical rain forest, and deciduous and coniferous forests are all examples of biomes.