Task: Class Relation Understanding (ontology: Food_Agriculture/PlantOntology)

Which of the following classes is one valid superclass of 'sepal stomatal complex'?

A. 2.01 main shoot and axillary shoots visible at one node stage
B. 2.03 main shoot and axillary shoots visible at three nodes stage
C. 2.04 main shoot and axillary shoots visible at four nodes stage
D. phyllome stomatal complex

Answer: phyllome stomatal complex