Definition: Food MCQs Quiz | Class 9

This quiz is for Class 9 students studying Home Science (Code 064), Unit IV: Food, Nutrition and Health. It covers the topic ‘Definition: Food’, focusing on its meaning, examples, and role in life. Answer all 10 questions and click “Submit Quiz” to see your score and download a PDF of your answers.

Understanding Food, Nutrition, and Health

Food is any substance, usually composed of carbohydrates, fats, proteins, and water, that can be eaten or drunk by an animal or human for nutrition or pleasure. It is the most basic necessity of life, providing the energy and nutrients required for growth, maintenance, and overall health.

Key Concepts about Food

1. Meaning of Food

In simple terms, food is what we eat to live and grow. Scientifically, it’s any nourishing substance that is eaten, drunk, or otherwise taken into the body to sustain life, provide energy, and promote growth. The components in food that provide this nourishment are called nutrients.

2. Nutrients

Nutrients are chemical substances in food that are used by the body. They are broadly classified into:

  • Macronutrients: Needed in large amounts, they include carbohydrates, proteins, and fats. They provide energy and are the building blocks of our body.
  • Micronutrients: Needed in smaller amounts, they include vitamins and minerals. They are essential for various bodily functions and protecting against diseases.

3. The Role and Functions of Food

Food serves three primary functions in our lives:

a) Physiological Functions
  • Energy-Giving: Carbohydrates and fats are the main sources of energy for all bodily activities, from breathing to running.
  • Body-Building: Proteins are essential for growth, building new cells, and repairing tissues.
  • Protective and Regulatory: Vitamins and minerals protect the body from infections and diseases, and help regulate bodily functions like heartbeat and water balance.
b) Psychological Functions

Food is closely linked to our emotions. It provides a sense of security, love, and attention. We often eat certain foods to feel happy, celebrate occasions, or cope with stress. For example, a favorite meal can be comforting and satisfying.

c) Social Functions

Food is a central part of social gatherings, festivals, and cultural traditions. Sharing a meal is a way to express friendship, hospitality, and social status. Different cultures have unique cuisines that are an important part of their identity.

Food Groups and Their Functions

Foods can be grouped based on their primary function in the body. Understanding these groups helps in planning a balanced diet.

Food Group Primary Function Examples
Energy-Giving Foods Provide energy for activities Cereals (rice, wheat), sugar, jaggery, fats, oils
Body-Building Foods Promote growth and repair body tissues Pulses (dal), milk, eggs, meat, fish
Protective Foods Protect against diseases and regulate body functions Green leafy vegetables, other vegetables, fruits

Quick Revision Points

  • Food is any substance that provides nutrients to sustain life.
  • Nutrients are essential chemicals in food (carbohydrates, proteins, fats, vitamins, minerals).
  • Food performs physiological (energy, growth, protection), psychological (emotional satisfaction), and social (cultural bonding) functions.
  • A balanced diet includes foods from all three major food groups to ensure overall health.
  • Water is also a crucial component of our diet, essential for almost all bodily functions.

Extra Practice Questions

  1. Define the term ‘nutrient’ in your own words.
  2. Give two examples of how food serves a social function in your family.
  3. Why is it important to eat foods from all three food groups (energy-giving, body-building, and protective)?
  4. What is the difference between a macronutrient and a micronutrient?
  5. Explain the psychological function of food with an example.