<prompt> The upper line in growth cha denotes what percentile of WHO reference standard: March 200550th percentile60th percentile70th percentile80th percentile  <response>: Ans. A: 50th percentile The growth cha recommended by the Government of India has 4 reference curves. The topmost curve corresponds to 80 of the median 50th percentile of the WHO reference standard. Second, third and fouh curve corresponds to 70, 60 and 50 of the median. Area between 80 and 70 lines indicates first degree mild malnutrition. 