How do Plants Use Light? (3.3)?

Plants use light to make their food, just like we use food to grow and stay strong.

Imagine you're baking cookies in the kitchen. You need flour, sugar, and heat from the oven to turn your ingredients into something new. Plants are kind of like cookie bakers too, they take carbon dioxide (a gas we breathe out) and water (from the soil), and with help from light, they make sugar and oxygen.

How Light Works Like a Special Lamp

Think of light as a special lamp that turns on in the morning. This lamp is like a helper for plants, it starts a process called photosynthesis (say "fo-to-syn-the-sis"). Inside their leaves, tiny helpers called chlorophyll (say "klor-o-fil") catch the light, just like how your eyes catch colors.

The more light there is, the harder the plants work, they make more sugar to grow taller and stay healthy. If it's dark, like at night, the lamp turns off, and the plants rest until morning comes again.

Take the quiz →

Examples

  1. A sunflower turns toward the sun to get more light for photosynthesis.
  2. Plants use light like a battery, storing energy in sugar to grow at night.
  3. Chlorophyll is like a green filter that helps plants catch sunlight.

Ask a question

See also

Discussion

Recent activity