Describe briefly the life cycle of Bryophytes.
Bryophytes have a more differentiated plant body than algae. It is thallus-like as well as prostrate or erect, with unicellular or multicellular rhizoids attaching it to the substratum. They don't have true roots, stems, or leaves. They can have root, leaf, or stem-like structures. The bryophyte's main plant body is haploid. It is called a gametophyte because it produces gametes. Bryophytes have multicellular sex organs.
Antheridium is referred to as the male sex organ. They synthesize biflagellate antherozoids. Archegonium, the female sex organ, is flask-shaped and produces a single egg. The antherozoids are released into the water and come into contact with archegonium.
The zygote is formed when an antherozoid combines with an egg. Zygotes do not immediately begin reduction division. They form a multicellular organism known as a sporophyte. The sporophyte is not free-living, but is connected to the photosynthetic gametophyte and feeds on it. Some sporophyte cells undergo reduction division (meiosis) to produce haploid spores. These spores germinate, resulting in the formation of gametophytes.
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