Question

Dark reaction involves utilisation of $C{O}_2$ in producing $C_6{H}_{1}2O_6\left(Glucose\right)$. Why is this phase called dark reaction?

• A. The dark reaction is not dependent on light
• B. It occurs simultaneously with the light reaction
• C. In this process, ATP and NADP molecules formed in light reaction enter in to dark reaction
• D. All of the above.

Answer 1

The correct option is A The dark reaction is not dependent on light

Light reactions need light to produce organic energy molecules (ATP and NADPH). They are initiated by colored pigments, mainly green colored chlorophylls. Dark reactions make use of these organic energy molecules(ATP and NADPH). This reaction cycle is also called Calvis Benison cycle, and it occurs in the stoma.

So, the correct option is 'The dark reaction is not dependent on light'.