❇️ 14 JUNE 🩸 World Blood Donor Day विश्व रक्तदाता दिवस 🩸Theme 2025 : "Give blood, give hope: together we save lives". 🧬 This day was initiated by the World Health Organisation (WHO) and was first celebrated on June 14 in 2005. 🔷 World Blood Donor Day is celebrated on June 14 to commemorate the birth anniversary of Karl Landsteiner who discovered the 'ABO blood group system' won Nobel Prize for it in 1930 . 🟢 FACTS and PYQs ▪️Blood is an Eg of Connective Tissue ▪️Study of Blood - Haemotology ▪️Vitamin K is mandatory for blood clotting ▪️Adrenal Gland control Blood pressure ▪️Life span of RBC -120 Days ▪️Blood is red in colour due to the presence of Haemoglobin. ▪️Haemoglobin is the iron-containing metalloprotein. ▪️Haemoglobin present in RBC carries or transports oxygen ▪️Hemophilia blood does not clot 🏢WORLD HEALTH ORGANISATION (WHO) ▪️Founded - 7 April 1948 ▪️HQ - Gevena Switzerland ▪️D.G - Tedros Adhanom ▪️MC - 194