Skip to main content

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".

Comments

Post a Comment

Popular posts from this blog

REVOLUTIONS-INDUSTRIAL AND INFORMATION

INDUSTRIAL   REVOLUTION  Starts   in   Europe  particularly  in  England  in  eighteen  century.It   changed  the  whole   of Europe   and   England 's  economy.During  this  period    New    machines  are  invented  in   England   to  speed  up  the    spinning  of  wool  and  cotton .At  first  they  were  powered  by  water  wheels  but  later steam  engines   are  developed.Iron   become  cheaper  and  stronger  as  Iron  making  techniques   improved.Canals  are  dug  to  carry   coal   from  the  mines and  to  transport  finished  goods.After ...
Post a Comment
Read more

WEB SITES TO ENTERTAIN YOU

If  you   get  bored   from  the   web  viewing  the  same  stuff    over  and  over  again -social media  ,blogs,   news  etc  then  you  certainly   need  some  thing  different  that  can  soothe   your  soul and  give  you some  kind of entertainment  then  here  are some  sites  that  can  solve  your  purpose. Bored Panda   Bored Panda is the place you want to be when you want to discover interesting and visually appealing content. It's a blog that publishes regular updates on the coolest finds in travel, photography, illustration, animals, DIY, technology, design and all sorts of other great categories. You can also create an account to vote posts up or down. Brain Pickings .     ...
Post a Comment
Read more

KEY BOARD SHORT CUTS

While   surfing  the Web,  these commands  could  help  you  and  are absolutely worth learning. By making repetitive motions faster, web surfing becomes so easy  and    pleasant! The following shortcuts can  be   work with desktop versions of Chrome, Firefox, and IE. CTRL-T to launch a new browser tab page. Tabbed pages are very useful: they let you open multiple web pages simultaneously without the same memory load as a full browser window.  Simply press CTRL-T to launch a new tab. Related: use CTRL-Page Up and CTRL-Page Down to navigate between the tabs.  CTRL-Enter to type 'www.' and '.com' Once you ...
Post a Comment
Read more