Question

which part of a leaf contains all the chemicals necessary for photosynthesis?
chloroplast
stoma
cuticle
upper epidermis

Explanation:

Chloroplasts are the organelles in plant cells that contain chlorophyll and other pigments necessary for photosynthesis. The stoma is for gas exchange, the cuticle is a waxy layer for protection, and the upper epidermis is a protective layer. Only chloroplasts have the chemicals (like chlorophyll) essential for photosynthesis.

Answer:

chloroplast