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

Which of the following definitions best describes 'Compression wood'?

A. the concept, reaction wood formed on the lower sides of branches and leaning trunks and characterized by darker color, glassy appearance, relatively wide and eccentric annual rings, shorter vascular elements, and excessive and uneven shrinkage
B. Continuity and felicity persistence are two characteristics of the periderm of cork oak that allow the sustained exploitation of cork. However, in some cork oaks sometimes appear in the secondary phloem small peridermal arcs enveloping the sclerites or the outermost blades of the broad phloem rays, and whose new felide ends up joining the anterior path of the felogene. These sclerenchymal formations, isolated from the intercarcass by a normal process of abcision, become sclerenchymal inclusions in the suberous tissue or the felogene surface. These corks have, for these reasons, great hardness, low elasticity and high density
C. Assessment of wood hardness by testing its resistance to pilodyn penetration
D. Evaluated by the homogeneity of the cork, aspecto da barriga and aspecto das costas which are an association of different features. Varies between 1st to 6th and refugo where 1st is the best, 6th the worst and refugo even worst.

Answer: the concept, reaction wood formed on the lower sides of branches and leaning trunks and characterized by darker color, glassy appearance, relatively wide and eccentric annual rings, shorter vascular elements, and excessive and uneven shrinkage