Plants need three main things to perform photosynthesis: light , water , and carbon dioxide , plus the green pigment chlorophyll inside their cells to capture light energy. During photosynthesis, they turn these into sugar for energy and release oxygen as a by‑product.

Core ingredients

  • Light (usually sunlight) : Provides the energy that powers the photosynthesis reactions in the chloroplasts. Without enough light, the process slows down or stops.
  • Water (H₂O) : Absorbed by the roots from the soil, carried up the stem to the leaves, and split to supply electrons and hydrogen for making sugars and oxygen.
  • Carbon dioxide (CO₂) : A gas taken in from the air through tiny pores called stomata on the leaves; supplies carbon and oxygen atoms for building glucose.

Inside the leaf

  • Chlorophyll and chloroplasts : Chlorophyll is the green pigment in chloroplasts that traps light energy so the plant can drive the chemical reactions of photosynthesis.
  • Leaf structure : Thin, broad leaves with a large surface area help absorb lots of light, and stomata allow gases to move in and out efficiently.

Word equation (simple form)

  • Photosynthesis can be summarized as:
    carbon dioxide+water→glucose+oxygen\text{carbon dioxide}+\text{water}\rightarrow \text{glucose}+\text{oxygen}carbon dioxide+water→glucose+oxygen
    in the presence of light and chlorophyll.

Extra helpful factors

  • Temperature : Needs to be in a suitable range; if it is too cold or too hot, the enzymes that drive photosynthesis do not work well.
  • Minerals and nutrients : Elements like magnesium and nitrogen are needed to build chlorophyll and other parts of the photosynthetic machinery, helping the process run efficiently.

Information gathered from public forums or data available on the internet and portrayed here.