Skip to main content

No one really knows what a tree is - Max G. Levy

516,701 Views

696 Questions Answered

TEDEd Animation

Let’s Begin…

Plants assume a variety of forms, and trees are just one of them. What makes or breaks a tree can come down to some pretty specific characteristics, based on how the plant develops as a result of how it evolved. Trees don’t all comprise one closely related group, like insects or mammals. So, how exactly do trees get classified as trees? Max G. Levy explains what distinguishes these woody plants.

Additional Resources for you to Explore

Evolutionary biologists study the observable forms that different species acquire. These physical traits are known as phenotypes, and they can generally be related to the genetic makeup of those organisms, called genotypes. Think about what phenotypes help distinguish humans from other species; also consider what phenotypes vary within a family. Across living organisms, different species have evolved the similar phenotypes independently, in so-called convergent evolution. For another example, read this story from Scientific American: Why Do Animals Keep Evolving into Crabs? and watch this TED-Ed lesson: Myths and misconceptions about evolution.

About TED-Ed Animations

TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

Educator
Max G. Levy
Director
Evandro D'Hipolito
Narrator
Alexandra Panzer
Composer
Cem Misirlioglu, Work Play Work
Sound Designer
Cem Misirlioglu, Work Play Work
Director of Production
Gerta Xhelo
Produced by
Abdallah Ewis
Editorial Director
Alex Rosenthal
Editorial Producer
Cella Wright
Fact-Checker
Charles Wallace

More from Awesome Nature