Final answer:
Organisms need food for energy, growth, and reproduction. Plants obtain energy from sunlight through photosynthesis, while animals get it by consuming plants or other animals. Food provides essential nutrients that organisms need to survive and stay healthy.
Step-by-step explanation:
All organisms need food because it provides them with energy and essential nutrients necessary for growth, maintenance, and reproduction. Food serves as a fuel source for cellular processes, such as metabolism, respiration, and synthesis of molecules. Organisms obtain food through various methods, such as photosynthesis in plants, ingestion in animals, or absorption in fungi and other microorganisms.
For example, photoautotrophs, like plants, obtain energy from sunlight through photosynthesis and convert it into glucose. Heterotrophs, such as animals, obtain energy by consuming plants or other animals. Decomposers, such as bacteria and fungi, obtain energy by breaking down dead organic matter.
By obtaining food, organisms can fulfill their energy needs and acquire essential macronutrients (carbohydrates, proteins, and fats) and micronutrients (vitamins and minerals) required for their survival and overall well-being.
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