What Is the Sun's Role in Photosynthesis?

The sun's role in photosynthesis is central.
••• Jupiterimages/Comstock/Getty Images

Photosynthesis is the method by which plants turn light into food, and the sun has a vital role in this process. Without sunlight, plants would not be able to live and there would be no oxygen for people to breathe.


Without the sun, photosynthesis could not take place. The sun provides the initial energy that starts the cycle of photosynthesis, which converts this sun energy into food for plants.


Along with sunlight, water and carbon dioxide are necessary for photosynthesis. A chemical reaction happens inside the chloroplasts of the plant cells, turning light, water and carbon dioxide into sugar, or carbohydrates, and oxygen.

Fun Fact

Human beings breathe oxygen and exhale carbon dioxide. Plants "breathe" carbon dioxide and "exhale" oxygen, which humans breathe.

Related Articles

How Does Photosynthesis Affect the Atmosphere of the...
What Is the Role of Pigments in Photosynthesis?
What Are the Functions of Photosynthesis?
Test Your Knowledge on Middle School Science
What Is Reduced & Oxidized in Photosynthesis?
How Are Photosynthesis & Cellular Respiration Related?
How Does Photosynthesis Affect the Atmosphere of the...
What Is Nadph in Photosynthesis?
How Do Plants Store Energy During Photosynthesis?
What Provides Electrons For the Light Reactions?
What Is the Photosynthesis Equation?
What Kind of Plants Live in the Bamboo Forest?
What Happens in the Light Reaction of Photosynthesis?
What Do Volvox Eat?
Characteristics of Aquatic Plants
How Do Plants Make Their Own Food?
How to Teach Light Refraction to Preschoolers
What Astronomical Instrument Measures the Brightness...
How to Calculate Volume of a Circular Cylinder
How to Make a 1% Sucrose Solution

Dont Go!

We Have More Great Sciencing Articles!