Question

question 7 of 10
which gas is a reactant in photosynthesis?
a. n₂
b. n₂o
c. o₂
d. co₂

Explanation:

Photosynthesis is the process by which plants use sunlight, carbon dioxide ($\ce{CO_2}$), and water to produce glucose and oxygen. The reactants (substances used) in photosynthesis are carbon dioxide and water, and the products are glucose and oxygen ($\ce{O_2}$). Nitrogen gas ($\ce{N_2}$) and dinitrogen oxide ($\ce{N_2O}$) are not reactants in photosynthesis.

Answer:

D. $\ce{CO_2}$