AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Nutrition provides energy and raw materials needed to sustain all other life processes. Without nutrition, an organism would have no energy for respiration, transport, or excretion, causing complete breakdown and death.
Though this seems like a 2-part question, it is only 1 mark, so keep it to one or two tight sentences. The key point examiners want: nutrition is the source of energy and materials, so all other processes (respiration, transport, excretion) depend on it. Cite the textbook idea that "energy needed for maintenance comes from food."