Question

which of the following is the correct equation for photosynthesis?
co₂ + sugar + h₂o → o₂ + light
co₂ + o₂ + h₂o → light+ sugar
co₂ + light + h₂o → o₂ + sugar
o₂ + light + h₂o → co₂ + sugar

Explanation:

Photosynthesis is the process by which plants use carbon dioxide ($CO_2$), water ($H_2O$), and light energy to produce oxygen ($O_2$) and glucose (sugar). The correct reaction is $CO_2 + light + H_2O
ightarrow O_2 + Sugar$, which matches the orange option. The other options either have incorrect reactants or products (e.g., using $O_2$ as a reactant which is a product of photosynthesis, or producing $CO_2$ which is a reactant).

Answer:

The orange option: $\boldsymbol{CO_2 + light + H_2O
ightarrow O_2 + Sugar}$ (or the option with the equation $CO_2 + light + H_2O
ightarrow O_2 + Sugar$ depending on the exact label, but from the description, it's the orange - colored card with that reaction).