Title: A Moss Life Cycle: Dominant Gametophyte - Video & Lesson Transcript | Study.com
Headings: A Moss Life Cycle: Dominant Gametophyte
A Moss Life Cycle: Dominant Gametophyte
Lesson Transcript
Introduction to Mosses
Review of Alternation of Generations
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A Moss Life Cycle: Dominant Gametophyte
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Content: Lesson Summary
Mosses are non-vascular plants that are small and live in close groups mostly in damp environments. Unlike more advanced plants, mosses have a dominant haploid stage. Moss gametophytes are generally either male or female. Male gametophytes contain antheridia, which produce and release the male gamete - sperm. Female gametophytes contain archegonia, which produce the female gamete - eggs. The sperm are released from the antheridia and swim to the archegonia in order to fertilize the egg. This newly formed diploid sporophyte will grow within the archegonia, eventually developing a foot that attaches to the gametophyte, a stalk, and a capsule that contains sporangium. Sporocytes within the sporangium undergo meiosis in order to create spores that are released to continue this alternation of generations. Learning Outcome
At the end of this lesson, you will be able to describe the process of alternation of generations in mosses, specifically what happens in the haploid and diploid stages. To unlock this lesson you must be a Study.com Member.