Question

blood is red in colour due to the presence of pigment called​

Answer 1

blood is red in colour due to the presence of pigment called haemoglobin

Answer 2

Hey dude,

haemoglobin

Within the red blood cells there is a protein called hemoglobin. Each hemoglobin protein is made up subunits called hemes, which are what give blood its red color. More specifically, the hemes can bind iron molecules, and these iron molecules bind oxygen.

@DevanKey02