Task: Class Definition Understanding (ontology: Food_Agriculture/Crop_Ontology)

Which of the following definitions best describes 'Average stem diameter'?

A. The average measurement with calipers midway between the unifoliate and the first trifoliate nodes for three mature plants per plot
B. Measure the content of stearic acid in the oil extracted from the seed
C. Measure amount of total seed soluble carbohydrates that is raffinose
D. Measurement of the moisture content of a mature seed of seed at harvest

Answer: The average measurement with calipers midway between the unifoliate and the first trifoliate nodes for three mature plants per plot