Plant Science Episode 21, How Temperate Trees Change Color and Grow Episode 21, How Temperate Trees Change Color and Grow.

Streaming video - 2017

Trees are a wonderful example of convergent evolution. While many trees are evergreen and others are drought deciduous, temperate trees lose their leaves in the winter because the trade-off of keeping a leaf from freezing doesn't offset the photosynthetic gain. But even after the leaves turn color and drop, the tree roots of some trees can still forage through the soil for nutrients.