Why Do Trees Have Leaves?

why trees have leavesHave you ever wondered why trees have leaves at all? Leaves don’t just grow on a tree the way hair grows on people. Leaves are a tree’s very lifeblood; without it, trees would starve to death.

Trees Have Leaves in Order to Stay Alive

The leaves’ serve a life-sustaining function. It all comes down to that one term you learned about in your 5th grade science class: photosynthesis.

Photosynthesis is the process of leaves absorbing sunlight and coverting that energy to produce sugar and sap from which it feeds. Leaves contain tiny organelles in some of their cells called chloroplasts. These plastids handle the energy conversion process. Chloroplasts contain a pigment molecule that you have also likely heard of: Chlorophyll. This molecule is responsible for the leaves’ green color.

Unbeknownst to most people, trees also sweat much the same way people do. This process is called transpiration, and it takes place through the leaves. Water evaporates from the leaves, allowing the tree to cool down.

Finally, the leaves also act as the tree’s breathing apparatus. Leaves contain tiny pores called the stomata. The pores take in carbon dioxide and breathe out oxygen.

When Human Intervention Is Necessary

Trees may require human assistance for maintaining optimal health. Our tree maintenance crew recommends that you give Pro-Cut Tree Service a call at least once a year to check your tree’s health. Our crew can gauge a tree’s current state of health partly by examining its leaves or lack of them. Our emergency services can also remove a tree that is unhealthy and on the brink of dying.

This is a fun educational article. We hope you found it informative. It would be good to share it with your kids. Knowing why trees have leaves will help them appreciate one of nature’s most majestic creations.

Edited by Justin Vorhees

Complete Tree Care and Education

Serving customers in Lake Stevens, Edmonds, Marysville, Mukilteo, Lynnwood, Everett, Snohomish and the surrounding area