DENDROLOGY

Detailed explanation-1: -Light-dependent reactions happen in the thylakoid membrane of the chloroplasts and occur in the presence of sunlight. The sunlight is converted to chemical energy during these reactions. The chlorophyll in the plants absorb sunlight and transfers to the photosystem which are responsible for photosynthesis.

Detailed explanation-2: -(i) Light reactions occur in grana thylakoids whereas dark reactions occur in stroma of chloroplasts.

Detailed explanation-3: -In eukaryotic cells, both the light and dark reactions of photosynthesis occur within chloroplasts-the light reactions in the thylakoid membrane and the dark reactions within the stroma.