[Music] what is the lifecycle of the moss long long years ago a special group of plants with a sense of adventure began making the journey from water to land what were these plants moss there are thousands of known species of mosses but the question is what plant group does Moss belong to bryophytes include the various mosses and live rods that are found commonly growing in moist shaded areas in the hills bryophytes also called amphibians of the plant kingdom because these plants can live on soil but are dependent on water for sexual reproduction the plant body of Rio finds is more differentiated and that of algae it is talus like and prostrate or erect and attached to the substratum by unicellular or multicellular rhizoids they lack true roots stems or leaves however they may possess root like leaf like or stem like structures mosses are small flowerless plants that typically grow in dense green clumps or mats often in damp or shady locations let's learn more about moss and its lifecycle the predominant stage of the life cycle of the moss is the gametophyte which consists of two stages number one pro to nama and number two leafy stage the first stage is the proton Emma stage which develops directly from a spore it is a creeping green branched and frequently filamentous stage the second stage is the leafy stage which develops from the secondary proton Emma as a lateral bud they consist of uprights Landa axis bearing spirally arranged leaves they attach to the soil through multicellular and branched rhizoids this stage bears the sex organs the sex organs are multicellular the male sex organ is cold and 3dm they produced a flagellate and tara Zoids the female sex organ called archegonium is flask shaped and produces a single egg the Antero swords are released into the water where they come in contact with archegonium the entero soit fuses with the egg to produce the Zygons i gods do not undergo reduction division immediately they produce a multicellular body called sporophyte the sporophyte is not free living but is attached to the photosynthetic gametophyte and derives nourishment from it some cells of the sporophyte and the goal reduction division or meiosis to produce haploid spores these spores germinate to produce gametophyte let's solve some important questions from medical exams question 1 gametophyte 'ok stage is dominant in number 1 bryophyte ER number 2 Teredo fighter number 3 gymnosperm or number 4 angiosperm this question was asked in Punjabi MT 2010 solution the main plant body of the bryophyte is haploid it produces gametes hence is called gametophyte hence option 1 is correct question tooth in bryophytes and thyroids are number one with flagellate number two uni flagellate number three some time by flagellates and sometimes UNIF legislates this question was asked in CPM tea 2012 solution in mosses antheridium is male sex organ which produces the flagellate male gametes cold and thyroid hence option 1 is correct this video concludes about the life cycle of the mas students must remember the two stages of the life cycle to answer question in the exam please like share and comment on the video and don't forget to subscribe to our YouTube channel for more interesting and educational videos to earn while you learn download extra class app from Google Play Store and get rewarded for study