The antheridium produces biflagellate spermatozoa which fertilizes the egg and produces diploid zygote; zygote grows into a sporogon and its cells mother cells of spores go through meiosis which produces haploid spores. Spores will be distributed with the wind, land on the substrate and germinate into protonema stage which then develops into a green, well-developed gametophyte.
Most of moss gametophytes have a shoot body that consists of a stem and leaves but no roots while others have a thallus body, which is a flat, leaf-like, and undifferentiated structure. There are three main groups, also known as subphyla, of Bryophyta: Hepaticae liverworts , Bryophytina true mosses , and Anthocerotophytina hornworts. However, if the sexual organs are near the soil surface, then the parasitic sporogon would not grow tall enough, and consequently would not be able to effectively distribute spores with the wind.
Register Sign In. June 3 68 Report. Difference between pteridophyta and spermatophyta Difference between pteridophyta and spermatophyta. Please enter comments.
Please enter your name. Please enter the correct email address. Agree to terms of service You must agree before submitting. HappyJohn The differences between these two groups, that is, Pteridophytes and the spermatophytes is described below : Actually, the Pteridophytes are the plant groups that have the system of vascular.
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