Haemoglobin is found in plasma of :

Explanation

Haemoglobin is a protein found in the red blood cells of many animals, including humans. It is responsible for transporting oxygen from the lungs to the rest of the body and returning carbon dioxide from the body to the lungs. In humans, haemoglobin is contained within the red blood cells, which are suspended in the blood plasma. While earthworms do have haemoglobin, it is dissolved in their blood plasma, unlike in humans where it is contained within cells. Birds and reptiles, such as sparrows and lizards, also have red blood cells that contain haemoglobin, rather than having it directly in the plasma.