Which statement about chlorophyll is correct?

Which statement about chlorophyll is correct?

• A. It is the pigment that gives photosynthetic organisms a green color
• B. It stores starch
• C. It is the enzyme that fixes carbon dioxide
• D. It transports electrons in the photosystem II

Answer: (A)

Chlorophyll is the light-absorbing pigment that gives photosynthetic organisms their green color because it reflects green light while absorbing red and blue wavelengths. The absorbed light energy excites chlorophyll molecules and drives the photosynthetic reactions by feeding energy into the reaction centers of the photosystems, initiating electron flow. It is not a storage molecule like starch, nor the enzyme that fixes carbon dioxide (that role belongs to RuBisCO). It also doesn’t itself transport electrons through Photosystem II; instead, it serves as the primary pigment that captures light energy to start the electronic changes in the photosynthetic electron transport chain. So the statement that chlorophyll gives photosynthetic organisms their green color is the correct one.

Chlorophyll is the light-absorbing pigment that gives photosynthetic organisms their green color because it reflects green light while absorbing red and blue wavelengths. The absorbed light energy excites chlorophyll molecules and drives the photosynthetic reactions by feeding energy into the reaction centers of the photosystems, initiating electron flow. It is not a storage molecule like starch, nor the enzyme that fixes carbon dioxide (that role belongs to RuBisCO). It also doesn’t itself transport electrons through Photosystem II; instead, it serves as the primary pigment that captures light energy to start the electronic changes in the photosynthetic electron transport chain. So the statement that chlorophyll gives photosynthetic organisms their green color is the correct one.