Multiple choice

Which of the following statements about dark reaction is/are incorrect?

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
D Correct answer
Explanation

This option is correct because water, ADP and H3PO4 are raw materials for light reaction. Raw materials of dark reaction are CO2, NADPH2 and ATP. Oxygen is a by-product of light reaction and is released in the atmosphere.

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