Which statement is not true of blood? **Quiz Question: Understanding Blood Functions****Which statement is NOT TRUE of blood?**- White blood cells destroy pathogens and provide immunity.- Nutrients and waste products are transported by red blood cells.- Red blood cells contain hemoglobin to carry oxygen.- Platelets are important for clotting to prevent blood loss.*Note: Select the statement that is incorrect regarding the functions of blood components.*

Blood is a motile connective tissue which consists mainly of fluid matrix or ground substance along with free cells. Blood is a red coloured fluid connective tissue and is the chief transport system of our body and has an important role in the defence against disease. Blood has two major components namely blood plasma and blood cells ( RBCs, WBCs and platelets).Nutrients and waste products are transported by red blood cells. This statement is not true about blood. Reason: Nutrients and waste products are transported by blood vessels and not by red blood cells. Hence, option 2 is incorrect statement about blood. White blood cells or leukocytes are colourless ,nucleated and motile cells of blood. These are of different types that is- eosinophils, basophils neutrophils, lymphocytes and monocytes which have active role in removing or destroying pathogens and developing immune response. Hence, option 1 is correct statement. Red blood cells contain hemoglobin which is a reddish respiratory pigment present in them. It is a chromoprotein with iron or heme part and the globin or protein part. It is the oxygen carrier of vertebrate body. Hence, option 3 is correct statement. Platelets are small cells with the size of about 2 to 4 micrometre found in the blood. They are highly contractile, round, oval or biconvex with granular cytoplasm, but without nucleus. These play an important role in blood clotting. Absence of this cell can lead to blood loss. Hence, option 4 is also correct statement.