Chlorophyll is present in a plant while haemoglobin is present in the blood of humans.
chlorophyll is green pigment while haemoglobin is red pigment.
Heamoglobin is the red pigment in blood that is capable of transporting oxygen
Chlorophyll is the green pigment in plants and certain organisms that is capable of trapping the energy of the sun to enhance the process of photosynthesis.

hemoglobin is built around iron (Fe)
chlorophyll is built around magnesium, (Mg)

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