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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