do plants really follow the sun

CHandVEL at chandvel at
Sat Jan 22 05:24:24 EST 2000

Thank you - nicely done  --  Chris

----- Original Message ----- 
From: mystic <mystic at>
To: <plantbio at>
Sent: Saturday, January 22, 2000 11:47 AM
Subject: Re: do plants really follow the sun

> patrickhall at wrote:
> > 
> > What part of a plant detects light so it can follow the sun?
> Plants follow the sun because of increased elongation of the stem on the
> shadowed side.  The growth of cells on the sunny side of the stem is
> suppressed by the presence of light (the growth hormone that causes
> cells to lengthen is photo-sensitive), so that one side of the stem is
> slightly longer than the other.  This makes the stem bend toward the sun
> during the day.  
> Appleman


More information about the Plantbio mailing list