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Life Cycle: Fern
Transcript of Life Cycle: Fern
Ferns belong in the kingdom Plantae
The Fern is a member of a group of roughly 12,000 species of
(having water-conducting vessels)
and have neither flowers nor seeds.
Ferns are in fossil records dating back 350 million years and is known to dominate many environments .
The Sporophyte phase (diploid) Produces Haploid Spores By Meiosis.
A spore grows by mitosis into a gametophite
The gametophite produces gametes by mitosis (often both egg and sperm on the same leaf).
A motile, flagellate sperm fertilized an egg that is attatched to the leaf.
The Fertalized egg is now a diploid zygote and then grows by mitosis into a sporophyte (an adult Fern).
Life Cycle Image
Ferns are vascular having true leaves (megaphylls).
They differ from seed plants (gymnosperms and angiosperms) in their mode of reproduction—lacking flowers and seeds.
Like other vascular plants, they have a life cycle referred to as alternation of generations, characterized by a diploid sporophytic and a haploid gametophytic phase.
Unlike the gymnosperms and angiosperms, the ferns' gametophyte is a free-living organism.
Presentation by: Caroline Nochasak
The Life of a Fern