Multiple choice

Which of the following statements are correct about dark reaction?

P. Source of energy for dark reaction is ATP synthesised in light reaction. Q. Raw materials of dark reaction are water, ADP and H3PO4. R. Oxygen is a by-product of dark reaction and is released in the atmosphere. S. Dark reaction occurs in stroma of chloroplast.

  1. P and Q

  2. P and R

  3. P and S

  4. Q and R

  5. R and S
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This option is correct because source of energy for light reaction is sunlight whereas source of energy for dark reaction is ATP synthesised in light reaction. The site for action of dark reaction is stroma of chloroplast.

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