Question

question 1
in this picture representing the process of photosynthesis, a and b correspond, respectively, to:
a. citric acid (krebs) cycle and light reactions.
b. light reactions and calvin cycle.
c. calvin cycle and light reactions.
d. light reactions and citric acid (krebs) cycle.
question 2
in this picture representing the process of photosynthesis, a and b happen, respectively in the following parts of the chloroplast:

Explanation:

In photosynthesis, the light - dependent reactions (A) use light energy to produce ATP and NADPH, which are then used in the Calvin cycle (B) to fix carbon dioxide and produce sugar. The citric acid (Krebs) cycle is part of cellular respiration, not photosynthesis. The light reactions occur in the thylakoid membranes of the chloroplast and the Calvin cycle occurs in the stroma of the chloroplast.

Answer:

Question 1: B. light reactions and Calvin cycle.
Question 2: A occurs in thylakoid membranes, B occurs in stroma.