Final answer:
All organisms need food to provide the energy required for growth, maintenance, and reproduction, which is essential for their survival and ability to reproduce.
Step-by-step explanation:
All organisms must have food to use as a source of energy for their metabolic activities. Food is essential for growth, maintenance, and reproduction of living beings. In biological terms, food provides chemical energy that organisms need to perform various functions.
While some organisms, like plants, capture energy from the sun and convert it to chemical energy through photosynthesis, others, such as animals and fungi, consume food to obtain this energy. This necessary energy intake is directly related to an organism's survival and reproduction.