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

Which of the following definitions best describes 'Root water extraction rate - Measurement'?

A. Calculate amount of water extracted during a period of time.
B. Measure leaf length and record it.
C. Record shoot weight in fresh weight basis.
D. Root length measured by root scanning and image analysis using WinRhizo Software.

Answer: Calculate amount of water extracted during a period of time.