Photosynthesis makes energy-rich sugars using light, water and carbon dioxide. The plant can use those sugars to build material or release useful energy through respiration. Light provides energy rather than carbon atoms. Follow the inputs separately so you do not confuse the source of energy with the sources of matter in the leaf.
Plants, animals and ecosystems · Discover & try
Where does a plant get the material for growth?
Reading level 2 of 5 · DevelopingChange
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photosynthesis
Using light energy to help form sugars from inorganic inputs.
carbon dioxide
An atmospheric gas that supplies carbon for photosynthesis.
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Schematic input-output model, not a complete chemical pathway or crop-growth prediction.
What to look for
- Light supplies energy
- Carbon dioxide supplies carbon
- Water and minerals have different roles
Explain what you noticed
A sapling gains carbon while growing in a pot. Which source supplies most of that carbon?
Keep this idea: Separate the source of energy from the sources of plant matter.
Follow the sources
- U.S. Department of Energy — DOE Explains the Plant Microbiome
- U.S. Department of Energy — DOE Explains the Carbon Cycle
Source material checked 2026-10-28. Explanations and activities by Nepedia. Source links do not imply endorsement.
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