Explanation:

- Chloroplast: These are the green plastids involved in photosynthesis. They contain chlorophyll and are not involved in storing starch, oil, or proteins.

- Leucoplast: These are non-pigmented plastids found in plant cells. They store starch, oils, and protein granules. They are typically found in roots and seeds.

- Chromoplast: These plastids contain pigments that give color to plants, such as yellow, red, and orange. They do not store starch, oil, or proteins.

- Xanthoplast: This term is not widely recognized in scientific literature as a type of plastid.