Question

multiple - choice question
which of the following is a reactant for photosynthesis?
oxygen (o2)
carbon dioxide (co2)
water (h2o)
sugar (c6h12o6)

Explanation:

Photosynthesis is the process by which plants use light energy to convert carbon dioxide ($CO_2$) and water ($H_2O$) into glucose ($C_6H_{12}O_6$) and oxygen ($O_2$). In a chemical reaction, reactants are the substances that undergo change. So, we need to check which of the given options are on the reactant side of the photosynthesis equation. The general equation for photosynthesis is \(6CO_2 + 6H_2O+light energy
ightarrow C_6H_{12}O_6 + 6O_2\). From this equation, it is clear that \(CO_2\) and \(H_2O\) are reactants.

Answer:

B. carbon dioxide (CO2), C. water (H2O)