Trees need branches so that they can have more
leaves for doing photosynthesis. If they only had
leaves coming directly off the trunk, there
wouldn't be as many leaves that could fit. Plus,
the leaves that were higher up would block the
lower leaves from getting light. Branches allow
the leaves to be spread out and catch more
The trunk does form from the sprout that comes
up from the seed.
The other sprout grows down and branches out to
form the roots. The roots make the tree more
stable if they spread out under the ground.
Can you think of other reasons that roots
should branch out? Think about what the roots do
for the tree.
Thanks for asking,