Tree roots are a ________ of sugars in spring and a ________ in the fall. a) source; source b) sink; sink c) sink; source d) source; sink
Tree roots are a ________ of sugars in spring and a ________ in the fall.
a) source; source
b) sink; sink
c) sink; source
d) source; sink
Answer
Source; sink
Explanation: In spring, tree roots act as a source of sugars by releasing stored sugars for growth. In fall, they act as a sink by storing sugars for the winter.