Showers and Thunderstorms Across the East; Rain and Mountain Snow out West. A frontal boundary draped from the Mid-Atlantic to Texas will continue to focus showers with the potential for locally heavy precipitation. A new active storm pattern will bring rain with mountain snow to the west. Pacific storms moving into the Central U.S. this week will bring showers and thunderstorms to the northern states. Read More >. Customize Your Weather.gov.
The prothallium produces both male and female sexual organs. When the female organs become fertilized by the male organs, small fern plants begin to grow. In some ferns it can take as long as six months for the first fronds (leaves) to appear after sexual fertilization.
Lesson Summary. Ferns are unique plants because they do not produce seeds. These vascular plants have adapted to a life cycle that uses spores rather than seeds. This alternation of generations in ferns means that there are multicellular stages that are haploid and diploid.We first looked at the haploid stage, which starts as a spore which develops into a gametophyte.e will use this diagram to illustrate the life cycle of ferns. The fern begins with the haploid stage as a spore. The spore will undergo mitosis in order to create many identical haploid cells.