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 logic of those top managers. Dominant logic consists of the mental maps developed through experience in the core business. Dominant logic Dominant logic relates to the main means a company uses to make a profit. In essence, it is an interpretation of how a company has succeeded. It describes the cultural norms and beliefs that the company espouses. Dominant logic can be useful when applied to corporate diversification. In this sense, dominant logic is a common way of thinking about strategy across different businesses. Negatively, it is logic which locks a company into thinking about making money in only one way.