Which of the following is not a nutrient?
Detailed Explanation
📌 Core Theoretical Concept:
The correct answer is 'Dietary fiber (roughage)' because dietary fibers are the fibrous parts of plant foods that our body cannot digest. They do not provide any chemical nutrients, calories, or energy to the body, but they are crucial for adding bulk to the stool and facilitating smooth bowel movements, preventing constipation. In contrast, carbohydrates, fats, proteins, vitamins, and minerals (such as iron and mineral salts) are classified as true nutrients because they are absorbed and utilized by the body for various physiological and metabolic functions.
📊 Key Exam Points:
- Carbohydrates and fats are primary energy-yielding macronutrients required for daily activities.
- Proteins and minerals (like iron) support body building, tissue repair, and hemoglobin formation.
- Roughage consists mainly of indigestible cellulose found in whole grains, fruits, and vegetables.
- Water is vital for cellular processes and nutrient transport, distinguishing it functionally from non-nutritive roughage.
📖 Theoretical Reference: Understanding nutrition, health, and hygiene is a foundational competency tested in pedagogical exams under Environmental Studies (EVS) and child development curriculum. For deeper insights, refer to Inclusive Education and health education modules.
🎯 Exam Perspective: Key Insights for Teacher Exams Detailed Solution ➔
Deep pedagogical analysis:
Questions regarding balanced diets and nutritional components frequently appear in teacher certification tests like CTET, UPTET, and state TETs. Aspiring educators must clearly differentiate between energy-giving nutrients, body-building nutrients, and regulatory/facilitative components like roughage. Conceptual clarity helps teachers design effective activity-based learning tasks for primary school children regarding health and nutrition.