Where does photosynthesis take place? Explain.

(N/A) - Photosynthesis takes place primarily in the green leaves of plants,but it also occurs in other green parts of the plants (e.g.,$Cactus$).
- The $mesophyll$ cells in the leaves contain a large number of $chloroplasts$.
- Usually,the $chloroplasts$ align themselves along the walls of the $mesophyll$ cells so that they receive the optimum quantity of incident light.