On earth, plants get their green color from chlorophyll pigments in their leaves. Chlorophyll absorbs light to power the process of photosynthesis, which is how plants make their own food.

These result in less chlorophyll being manufactured over a longer time and slower leaf drop. If a freeze occurs early in the ...

Chloroplasts contain a substance called chlorophyll, which gives the plant its green colour. Chlorophyll absorbs sunlight and uses its energy to convert carbon dioxide and water into glucose.