Multiple choice

The red colour of blood is due to the presence of a pigment called?

  1. Haemoglobin

  2. Chlorophyll

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A Correct answer
Explanation

The red color of blood is due to hemoglobin, an iron-containing protein found inside red blood cells. When hemoglobin binds with oxygen in the lungs, it turns bright red. Chlorophyll, on the other hand, is the green pigment responsible for photosynthesis in plants.