The most reliable estimate of growth is by measuring changes in
Answer Details
The most reliable estimate of growth is by measuring changes in dry weight. When an organism grows, its cells increase in size and/or number, leading to an overall increase in mass. Measuring dry weight is a way to determine the actual amount of organic matter gained by the organism, without including any extraneous water or other substances. This method is widely used in the study of microbial growth and also in plants and animals.