Fern plants. Like all other vascular plants, the diploid sporophyte is the dominant phase or generation in the life cycle. The gametophytes of ferns, however, are very different from those of seed plants. They are free-living and resemble liverworts, whereas those of seed plants develop within the spore wall and are dependent on the parent sporophyte for their nutrition. A fern gametophyte typically consists of: Ferns first appear in the fossil record in the early Carboniferous period. By the Triassic, the first evidence of ferns related to several modern families appeared. The great fern radiation occurred in the late Cretaceous, when
Dominant culture Dominant culture A dominant culture is a cultural practice that is dominant within a particular political, social or economic entity, in which multiple cultures are present. It may refer to a language, religion/ritual, social value and/or social custom. These features are often a norm for an entire society. It achieves dominance by being perceived as pertaining to a majority of the population and having a significant presence in institutions relating to communication, education, artistic expression, law, government and business. The concept of "dominant culture" is generally used in academic discourse in fields such as sociology, anthropology and cultural studies. The