Which of the following statements about dark reactions is correct?

Options

A. They occur in darkness.
B. They are not light dependent.
C. They are dependent upon the products syntesised during light reactions.
D. All of these

Answer

C

Explanation

Bisoynthetic phase (Dark or Blackman's reaction) catalyses the assimilation of `CO_(2)` to cabohydrates. These reactions occurs in stroma or matrix of chloroplasts and all the enzyme required for the processes are present in the stroma/matrix of choroplasts. These reactions do not require light, instead assimilatory power (ATP and NADPH) produced during photochemical (light) phase is used in fixation and reduction of `CO_(2)` However, this should not be construed to mean that they occur in darkness or that they are not light dependent.