Collectively,  hydrogen bonds hold
   water molecules together, resulting in cohesion.
<P>
   Water  molecules  are also attracted to other substances, such as cell
   walls, by adhesion.
<P>
   These properties help transport water up against gravity in plants.
<P>
   Tutorial:  <A ClAsS=ACT Href="http://media.pearsoncmg.com/bc/bc_campbell_biology_7/media/activities/load.html?3&amp;B" oNClick="popact('http://media.pearsoncmg.com/bc/bc_campbell_biology_7/media/activities/load.html?3&amp;B');txtcolor('cohesion1','gray');return false;" Id=cohesion1><iMg sRc="/images/tutorial.gif" aLt='' boRDer=0></A>