AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Translocation of food in phloem requires ATP (energy), which is used to actively load solutes, creating an osmotic pressure difference that drives the movement of food.
Source: Life Processes, Section 5.2
The examiner expects the key term ATP as the energy currency used in phloem translocation. The active loading of sugars into phloem requires energy in the form of ATP. A one-mark answer needs only the energy source named, with minimal supporting context. Avoid lengthy explanations.