Fungus structure.
<P>
   The  above-ground  mushrooms  are  sexual  structures, which are often
   temporary and wither after releasing spores.
<P>
   The  underground  bodies  consist  of mycelia, networks made of hyphae
   which  secrete exoenzymes and absorb nutrients in a heterotrophic life
   style.
<P>
   The cell walls are made of the polysaccharide chitin.
<P>
   Review:  <A ClAsS=MID Href="../../../med/Vid/Discover2e/ch03a06_Fungi.swf" oNClick="popurlt('../../../../med/Vid/Discover2e/ch03a06_Fungi.swf');txtcolor('fungus-structure1','gray');return false;" Id=fungus-structure1><iMg sRc="/images/shockwave.gif" aLt='' boRDer=0></A>