Multiple choice

The site for dark reactions to take place is _______.

  1. thylakoid membrane

  2. stroma

  3. stomata

  4. grana
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The dark reaction takes place in the stroma, within the chloroplast, and converts CO2 to sugar. This reaction does not directly need light in order, to occur, but it does need the products, of the light reaction (ATP and another chemical called NADPH). The dark reaction involves a cycle, called the Calvin cycle, in which CO2 and energy from ATP are used, to form sugar.

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