Photosynthesis: How Plants Make Food

Plants are living things that can make their own food. They do this with a special trick called photosynthesis.

Simple explanation

Plants use sunlight, water, and a gas from the air called carbon dioxide. Inside their green leaves, they turn those things into sugar (food) and oxygen (something we breathe).

Step-by-step

1. Sunlight: The sun gives energy to the plant.
2. Leaves and chlorophyll: Leaves have a green color called chlorophyll. Chlorophyll is like a tiny kitchen that catches sunlight.
3. Water: Roots drink up water from the soil and send it to the leaves.
4. Carbon dioxide: Plants take in this gas from the air through tiny holes in the leaves.
5. Make food and oxygen: Using the sun's energy, the leaf makes sugar for the plant and lets out oxygen into the air.

Recipe for a plant: Sunlight + Water + Carbon dioxide => Sugar (food) + Oxygen

Why it matters

• Plants get food to grow.
• They make oxygen so animals and people can breathe.
• They help keep the air and world healthy.

Easy experiment (with an adult)

Try this simple test: put one small potted plant in a sunny spot and another small plant in a dark place for one week. Watch which plant stays green and grows. The sunny plant should do better because it can do photosynthesis.

Quick quiz

1. What do plants need from the sun? Energy
2. What green part helps make food? Chlorophyll in the leaves
3. What do plants make that we breathe? Oxygen

Great job! Now you know how plants turn sunlight, water, and air into food and oxygen.