Practice question
Question
Sucrose–H⁺ symporters are involved in:
Explanation
Apoplastic loading (B) is correct here. This is core PHLOEM TRANSLOCATION: once you know the definition or pathway step, Apoplastic loading is the clear fit. The wrong ones are A) Symplastic loading; C) Polymer trapping; D) Unloading only. If the topic is about gradients or potentials, water/solutes move from higher to lower of the relevant quantity.
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