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PLANT VARIETY-LIVERWORTS AND MOSSES

LIVERWORTS  AND  MOSSES ARE   SMALL, LOW   GROWING PLANTS  that    belong   to  the  phylum   Bryophyta  , Bryophytes    do  not  have  true  stem,leaves, or  roots(they  are   anchored  to   the  ground  by  rhizoids ),  nor  do  they  have  the  vascular  tissues(xylem  and  phloem)  that  transport   water  and  nutrients   in  higher  plants . With   no   outer  ,  waterproof   cuticle  ,  bryophytes    are  susceptible   to drying  out ,  and  most  grows  in  moist    habitats.
The   bryophyte     life-cycle   has  two   stages  .In   stage  one ,the   green   plant (gametophyte)produces   male   and  female  gametes(sex  cells),  which  fuse  to  form   zygote.In  stage  two, the  zygote   develops  into    a  sporophyte  that  remain  attached     to  the    gametophyte.
The    sporophyte    produces   spores  ,  which  are  released    and  germinates  into    new  green   plants.Liverworts   (class-Hepaticae)  grow  horizontally  and  may  be  thalloid  (flat  and  ribbon  like)  or  "leafy".Mosses   (class-musci)  typically   have  an  upright  "stem"  with  spirally   arranged  "leaves".

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