Question

Choose the correct option that describes the reactions involved in photosynthesis.

Statement 1: There are two reactions: Light and Dark

Statement 2: Dark reactions occur only during night time

Statement 3: Calvin-Benson Cycle is a part of the dark reaction

• A. Statements 1, 2 and 3 are correct.
• B. Statements 1 and 3 are correct.
• C. Statements 1 and 2 are correct.
• D. Statements 2 and 3 are correct.

Answer 1

The correct option is B

Statements 1 and 3 are correct.

There are two reactions that form part of photosynthesis: Light-dependent and Dark or Light independent reaction. The “dark” in dark reaction is a misnomer as this reaction actually occurs in the day time. It is called so because this reaction does not require the presence of light. The Calvin-Benson cycle which churns out glucose is a part of the dark reaction.