3. Using the onion cell diagram above, which organelle is responsible for the greenish color?

Chloroplast

Explanation:

The organelle is responsible for the greenish color is "the chloroplast".

Chloroplasts are seen as these numerous, green, disc-like structures are responsible for doing photosynthesis. This means that the making food for/by the plant is aided by the chloroplast. The greenish color is gotten from the presence of chlorophylls, green-pigmented molecules. They are involved in harvesting light that is used use for photosynthesis. These chloroplasts can be seen as when they are pushed toward the edges of the cell.

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