HORTICULTURE

Detailed explanation-1: -Unlike the light reactions, which take place in the thylakoid membrane, the reactions of the Calvin cycle take place in the stroma (the inner space of chloroplasts). This illustration shows that ATP and NADPH produced in the light reactions are used in the Calvin cycle to make sugar.

Detailed explanation-2: -Within the Chloroplast Stroma, the Calvin cycle takes place. Option (c) Chloroplast Stroma is the correct response.

Detailed explanation-3: -The Interworkings of the Calvin Cycle. Figure 1. Light-dependent reactions harness energy from the sun to produce ATP and NADPH. These energy-carrying molecules travel into the stroma where the Calvin cycle reactions take place.

Detailed explanation-4: -What is stroma in a chloroplast? Stroma is the fluid-filled internal space of the chloroplasts which encircle the grana and the thylakoids. It contains chloroplast DNA, starch and ribosomes along with enzymes needed for the Calvin cycle.

Detailed explanation-5: -In the C4 plants, the Calvin cycle occurs in the bundle-sheath cells (in C3 plants this occurs in the mesophyll cells).