Nutrition and Health : 12th Class Biology Question Answer Lesson 28 – NIOS

Nutrition and Health : 12th Class Biology Question Answer Lesson 28 – NIOS

Nutrition and Health : 12th Class Biology Question Answer Lesson 28 - NIOS


  1. Define nutrition and nutrients
    Ans. Nutrition : Sum of the processes by which an organism takes in, metabolises and utilises food substances.
    Nutrients : Substances which help in maintaining proper health and are
    required for the survival of an individual.
  2. Name the various nutrients of food.
    Ans. Carbohydrates, fats, proteins, minerals, vitamins and water.
  3. Differentiate between macronutrients and micronutrients
    Ans. Nutrients required in large quantities are called macronutrients such as Health carbohydrates fats, proteins and water.
    Nutrients required in small amounts are micronutrients e.g. minerals and
  4. Name the following :
    (i) two water soluble vitamins- vitamin B and C
    (ii) two sources of roughage- leafy vegetables, fruits
    (iii) two sources of proteins- milk, fish.
  5. If equal amount of sugar and butter are consumed, which one will provide more energy?
    Ans. Butter


  1. Define malnutrition.
    Ans. The condition resulting from lack of essential nutrients in diet is malnutrition.
  2. What is PEM ? Name two diseases caused due to PEM.
    Ans. Protein Energy Malnutrition; Marasmus, Kwashiorkor
  3. A person has low haemoglobin content, tires easily and looks pale. Name thedisease he is suffering from.- Anaemia
  4. Give two food items which can prevent vitamin D deficiency.
    Ans. milk, cod liver oil, egg yolk, exposure to light (Any two)


  1. List any two causes of obesity.
    Ansd. Over eating, lack of exercises, hormonal imbalance.
  2. Suggest two methods to prevent obesity Health
    Ans. Avoid fried food, carbohydrates, take regular exercise, eat green leafy
    vegetable (Any two).
  3. Mention two symptoms of excessive intake of Iron.
    Ans. Constipation, Diarrhoea, epigastric pain (any two).
  4. Define hypervitaminosis. Name two vitamins which when taken regularly in diet cause hypervitaminosis.
    Ans. Excess presence of vitamins in the body. vitamin A and D.


  1. Differentiate between
    (i) Marasmus and Kwashiorkor.
    (ii) Rickets and Osteomalacia
    (iii) Essential and non-essential amino acids
    (iv) Body-building and protective foods.
    (v) Water soluble vitamins and fat soluble vitamins.
  2. Give reasons why do children of 1-5 years develop PEM.
  3. Why one should include more than one type of proteins in the meals?
  4. What is the importance of water in the diet ?
  5. What is a balanced diet ? Why does a pregnant women or a nursing mother needsspecial diet ?
  6. Why should food contain roughage ? Name two sources of roughage in our diet.
  7. Why is polishing of rice not advisable ? If a person always consumes polishedrice, what is he likely to suffer from ? Give two symptoms.
  8. State four important functions of food.
  9. If a child is not able to see in dim light, which two food stuffs will you advisehim to eat. Give reasons.
  10. Name two sources rich in
    (i) Vitamin A (ii) Calcium (iii) iron
    (iv) Vitamin B12 (v) starch (vi) Glucose
  11. What are minerals ? Name any two minerals and their sources.
  12. What are deficiency diseases ? Name two diseases caused by the deficiency ofprotein and carbohydrates. Also write the symptoms of these deficiency diseases.

NIOS 12th class biology Q Ans

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Himanshu Kumar

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