Question

in which part of chloroplast does photosynthesis occur?

Answer 1

In thylakoid membranes.
Hope it helps

Answer 2

Photosynthesis is a two stage process in which the first stage is light dependent and occurs in the thylakoid membranes where photosystems exist. The products of the first stage are needed for the second stage tooccur in the stroma of the choloplasts also known as the light independent stage.