Answer :
From the diagram, structure 1 would be the chloroplast and it represents the site of photosynthesis.
Plant cells
The image (see attached) is that of a plant cell and structure labeled 1 is the chloroplast.
The chloroplast of plant cells acts as the site of photosynthesis where inorganic materials are used to synthesize carbohydrates.
Plants generally serve as producers in food chains and thus, chloroplast helps sustain life.
More on plant cells can be found here: https://brainly.com/question/1894299

Answer:
D Structure 1 is a chloroplast which is the site of photosynthesis.
Explanation:
I got it correct on my test