Concept of Balanced Diet MCQs Quiz | Class 9
This is a multiple-choice quiz for Class IX Home Science (Code 064), Unit IV: Food, Nutrition and Health. The questions cover the topic of Concept of Balanced Diet, including its definition, food variety, adequacy, and moderation. Submit your answers to see your score and download a PDF of your performance.
Understanding the Concept of a Balanced Diet
A balanced diet is fundamental to good health. It provides our body with all the essential nutrients it needs to function correctly. For a growing student, understanding and following a balanced diet is crucial for physical growth, mental development, and overall well-being. This concept is built on three main pillars: variety, adequacy, and moderation.
Key Principles of a Balanced Diet
- Definition: A balanced diet is one that contains differing kinds of foods in certain quantities and proportions so that the requirement for calories, proteins, vitamins, minerals, and alternative nutrients is adequate. A good diet also provides a small provision of extra nutrients for short durations of leanness.
- Food Variety: No single food contains all the essential nutrients. Therefore, it is important to eat a wide variety of foods from all major food groups. This ensures that you get a broad spectrum of nutrients. The main food groups are: carbohydrates (cereals, grains), proteins (pulses, milk, meat), fats (oils, nuts), and vitamins & minerals (fruits, vegetables).
- Adequacy: This principle means that the diet provides sufficient energy and enough of all the necessary nutrients to meet the needs of a healthy person. The needs vary depending on age, gender, and level of physical activity. For example, an active teenager needs more energy than a sedentary adult.
- Moderation: Moderation means not eating too much of any one thing. It is particularly important for foods high in fat, sugar, and salt. While these can be part of a healthy diet, they should be consumed in small amounts to prevent health problems like obesity, diabetes, and heart disease.
Major Food Groups and Their Functions
| Food Group | Major Nutrients Provided | Primary Function |
|---|---|---|
| Cereals and Grains | Carbohydrates, Fibre | Provide energy |
| Pulses, Legumes, Milk, Meat | Proteins | Body building and repair |
| Fruits and Vegetables | Vitamins, Minerals, Fibre | Protection against diseases |
| Oils, Nuts, and Oilseeds | Fats, Energy | Provide concentrated energy, insulation |
Quick Revision Points
- A balanced diet is essential for growth, energy, and protection from illness.
- It must include a variety of foods from all food groups.
- Adequacy ensures you get enough nutrients for your body’s needs.
- Moderation helps you avoid overconsumption of unhealthy components like excess sugar, salt, and fat.
- Water is also a crucial part of a balanced diet, essential for all bodily functions.
Practice Questions
- What is the primary role of proteins in the body?
- Why is it advised to limit the intake of junk food?
- Name two sources of dietary fiber.
- How does an individual’s energy requirement change with physical activity?
- What is malnutrition and how can it be prevented?
