Question

Light reaction of photosynthesis occur in:

• A. Only absence of light
• B. Only presence of light
• C. Presence and absence of light
• D. Absence of light in maximum intensity

Answer 1

The correct option is B Only presence of light

In photosynthesis, the light-dependent reactions take place on the thylakoid membranes. The light-independent reactions take place in the stroma. The thylakoid membrane contains some integral membrane protein complexes that catalyze the light reactions. There are four major protein complexes in the thylakoid membrane Photosystem II (PSII), Cytochrome b6f complex, Photosystem I (PSI), and ATP synthase. These four complexes work together to ultimately create the products ATP and NADPH.

So, the correct answer is option B.