Practice question

Glucosinolates (D) is correct here. This is core PSS- Sec G- Sec metabolites: once you know the definition or pathway step, Glucosinolates is the clear fit. The wrong ones are A) Alkaloids; B) Terpenoids; C) Phenolics. If the topic is about gradients or potentials, water/solutes move from higher to lower of the relevant quantity.