a) Blood is a tissue consisting of plasma in which red blood cells, white blood cells, and platelets are suspended.
b) Blood plasma transports:
- Carbon dioxide from the organs to the lungs
- Soluble products of digestion from the small intestine to other organs
- urea from the liver to the kidneys.
c) Red blood cells transport oxygen from the lungs to the organs. Red blood cells have no nucleus. They are packed with a red pigment called haemoglobin. In the lungs, oxygen combines with haemoglobin to form oxyhaemoglobin…