yes... notice the green in the twigs and stems, and if you scratch the twig you will
see green underneath. the chlorophyll is withdrawn from most leaves in fall (which
is why they turn color) and stored, and it is responsive to light. one reason they
know when to "start their engines" in spring at the correct time is photoperiod, the
length of the day. Ingrid

"Scooter the Mighty" wrote:
Well yes, but if the tree has no leaves, does it know there is light
out?


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