Question

1. where photosynthesis occurs

Explanation:

Photosynthesis occurs in the chloroplasts of plant cells (and some other photosynthetic organisms like algae). Chloroplasts contain chlorophyll which captures light energy, and the organelle has structures (thylakoids, stroma) where the light - dependent and light - independent (Calvin cycle) reactions of photosynthesis take place.

Answer:

Photosynthesis occurs in the chloroplasts (of plant cells, algae, and some bacteria).