Question

which of the following is required for dark reactions to take place?
a. light
b. oxygen
c. atp
d. water

Explanation:

The dark reactions (Calvin cycle) of photosynthesis use ATP (produced in the light reactions) to convert carbon dioxide into glucose. Light is not required for dark reactions (contrary to option a). Oxygen is a product of light reactions (not needed for dark reactions, so option b is wrong). Water is mainly involved in light - dependent reactions (option d is incorrect).

Answer:

C. ATP