Consider the following statements regarding the nutritional needs of adolescents: 1. A balanced diet consists exclusively of proteins and vitamins. 2. Iron is essential for adolescents because it builds blood. 3. Chips and packed snacks have high energy but limited nutritional value compared to regular meals. Which of the statements given above is/are correct?

Correct Option The correct option is (c) 2 and 3 only. Explanation Adolescence is a phase of rapid physical growth and development, requiring a diet that meets increased energy and nutrient demands. A balanced diet ensures the intake of all essential macronutrients and micronutrients in appropriate proportions to support this physiological transition. Statement-wise Analysis - Statement 1 is Incorrect. A balanced diet does not consist exclusively of proteins and vitamins. It must include carbohydrates and fats (for energy), proteins (for growth and repair), vitamins and minerals (for metabolic regulation), as well as adequate water and dietary fiber. Excluding energy-giving foods like carbohydrates renders the diet unbalanced. - Statement 2 is Correct. Iron is a critical mineral for adolescents because it is a key component of hemoglobin, the pigment in red blood cells responsible for transporting oxygen. Adequate iron intake is necessary to support the expanding blood volume during growth and to prevent anemia. - Statement 3 is Correct. Chips, packed snacks, and other processed foods are typically energy-dense (high in calories from fats and sugars) but nutrient-poor (lacking essential vitamins, minerals, and fiber). Therefore, they cannot replace regular meals which provide the comprehensive nutrition required for health. Key Takeaway: A balanced diet requires a mix of carbohydrates, fats, proteins, minerals, and vitamins. Iron is specifically essential for blood formation (hemoglobin), while junk food provides empty calories without nutritional value.

NCERT Class 8 Science — Chapter 4: Reaching the age of adolescence

mcqeasy

Consider the following statements regarding the nutritional needs of adolescents:

A balanced diet consists exclusively of proteins and vitamins.
Iron is essential for adolescents because it builds blood.
Chips and packed snacks have high energy but limited nutritional value compared to regular meals.

Which of the statements given above is/are correct?

Official previous-year question

Verified 1 Aug 2026.

Options

A1 and 2 only
B2 only
C2 and 3 only
D1, 2 and 3

Did you get this right?

Solution

Correct Option

The correct option is (c) 2 and 3 only.

Explanation

Adolescence is a phase of rapid physical growth and development, requiring a diet that meets increased energy and nutrient demands. A balanced diet ensures the intake of all essential macronutrients and micronutrients in appropriate proportions to support this physiological transition.

Statement-wise Analysis

Statement 1 is Incorrect. A balanced diet does not consist exclusively of proteins and vitamins. It must include carbohydrates and fats (for energy), proteins (for growth and repair), vitamins and minerals (for metabolic regulation), as well as adequate water and dietary fiber. Excluding energy-giving foods like carbohydrates renders the diet unbalanced.
Statement 2 is Correct. Iron is a critical mineral for adolescents because it is a key component of hemoglobin, the pigment in red blood cells responsible for transporting oxygen. Adequate iron intake is necessary to support the expanding blood volume during growth and to prevent anemia.
Statement 3 is Correct. Chips, packed snacks, and other processed foods are typically energy-dense (high in calories from fats and sugars) but nutrient-poor (lacking essential vitamins, minerals, and fiber). Therefore, they cannot replace regular meals which provide the comprehensive nutrition required for health.

Key Takeaway: A balanced diet requires a mix of carbohydrates, fats, proteins, minerals, and vitamins. Iron is specifically essential for blood formation (hemoglobin), while junk food provides empty calories without nutritional value.

Your note

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Consider the following statements regarding the development of the body during adolescence: 1. All parts of the body grow at the same rate during adolescence. 2. Sometimes arms and legs may look oversized and out of proportion initially. 3. Height depends on genes, but nutrition helps bones and muscles grow adequately. Which of the statements given above is/are correct?

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Correct Option

The correct option is (c) 2 and 3 only.

Explanation

Statement-wise Analysis

Statement 1 is Incorrect. A balanced diet does not consist exclusively of proteins and vitamins. It must include carbohydrates and fats (for energy), proteins (for growth and repair), vitamins and minerals (for metabolic regulation), as well as adequate water and dietary fiber. Excluding energy-giving foods like carbohydrates renders the diet unbalanced.
Statement 2 is Correct. Iron is a critical mineral for adolescents because it is a key component of hemoglobin, the pigment in red blood cells responsible for transporting oxygen. Adequate iron intake is necessary to support the expanding blood volume during growth and to prevent anemia.
Statement 3 is Correct. Chips, packed snacks, and other processed foods are typically energy-dense (high in calories from fats and sugars) but nutrient-poor (lacking essential vitamins, minerals, and fiber). Therefore, they cannot replace regular meals which provide the comprehensive nutrition required for health.