[Plant-biology] Guard cell chloroplasts

[Gerard Nolan]

Thu Aug 11 03:00:32 EST 1994 you queried as to why your Arabidopsis 
plant lacked guard cell chloroplasts! I sincerely hope you found the 
answer. now im hoping you could do the same for me. my query to you 
is.. why would a plant have guard cells completely full of chloroplasts 
(literally jam-packed in both sun and shade leaves) and is this a 
common feature?
looking foreward to your reply
Ger