Ans- Blood is a fluid made up of plasma and blood cells that perform specific functions. These specialized blood cells have structural differences which help them in performing these functions. The various components of blood and their functions are as follows-Plasma- Plasma is the liquid part of the blood responsible for exchanging water with the cells to maintain the hydration of tissues. It also transports absorbed nutrients to the various tissues of the body.Red Blood Cells- These cells consist of haemoglobin and are responsible for transporting oxygen to all the tissues throughout the body.White Blood Cells- White blood cells are the warriors of the body that protect us against any foreign substance. These cells are nucleated and are actively involved in defence mechanism and reparation activity.Platelets- Platelets are responsible for blood clotting to prevent and control bleeding.