Trees
“He who plants a tree plants hope.” —Lucy Larcom

A Seed Takes Root

The Living Forest

See what tree rings tell us
about the life of a tree

A Seed Takes Root

Pictorial timeline shows
how a pinecone sheds
a seed and becomes a tree
Anatomy of a Tree

See a cross-section
of the inside of a tree trunk

 

A SEED TAKES ROOT

Pictorial timeline shows
how a pinecone sheds
a seed and becomes a tree

1 The embryo tree inside the seed 
2 Complete with tiny leaves, stem, and a point that will become a root, the tiny embryo tree is embedded in a food supply called "endosperm".
3 The growing embryo splits the shell of the seed.
4 Responding to gravity — whichever way the seed lies — the root probes its way toward the ground.
 
5 As soon as the tiny root tip penetrates the soil, the tree is not only fixed in the ground, but is capable of absorbing water and mineral nutrients.
6 The leaves emerge from the shell and create a supply of chlorophyll. Now the tree can manufacture its own food from water in the soil and carbon dioxide in the air.
7 Hidden at the base of the leaves is the "terminal bud." Within this cluster of actively dividing cells, all upward growth takes place.

Images courtesy of International Paper