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What is Bryophytes hepaticopsida ????? |
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Answer» HEPATICOPSIDA – LIVERWORTS(i) All the bryophytes included in this class have\xa0a shape like liver, so they are known as liverworts.(ii) Plant body of this group is thallus like. Rhizoids and scales are present on thallus.. Rhizoids are unicellular and unbranched. Scales are multicellular.(iii) The sporophyte of Liverworts is completely dependent on gametophyte i.e. it depends on gametophyte for food, water and habitat.iv) The sporophyte of Liverworts is made up of foot, seta and capsule. (Except Riccia sporophyte is made up of only capsule).(v) In this class formation of spores and nurse cells takes place by the cells of endothecium. Cells of amphithecium form only wall of sporophyte.Amphithecium = Wall of sporophyteEndothecium = sporogenous cells = spore mother cells + nurse cells(vi) Elaters are present in sporophyte of some members of liverworts. (eg. Marchantia - In Marchantia nurse cells are modified in to elaters) Elaters are hygroscopic and they help in dispersal of spores.Eg. of LiverwortsRiccia, Marchantia , Cryptothallus, Riella, Pellia, Porella I want answer not sayd Sayd kisi plant ka type . |
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