Subject :NSO Class : Class 7
Read the given passage. There are 3 types of blood cells, X, Y and Z. X is biconcave disc shaped and contains haemoglobin. Y protects us from many diseases and helps fight infection. Z helps in blood clotting. Select the incorrect option regarding X, Y and Z.
APeople living in higher altitudes have higher X count as compared to people living in plains.
BHigh Y count indicates some infection in the body.
CDecrease in Z count also indicates infections like dengue.
DPeople with very low X count continue to bleed even from minor injury as their blood does not clot.