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

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

INTEXT QUESTIONS 28.1

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
   vitamins
   
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

INTEXT QUESTIONS 28.2

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)

INTEXT QUESTIONS 28.3

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.

TERMINAL EXERCISES

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

• Origin and Evolution of Life & Classification : 12th Class Biology Notes – NIOS
• The Kingdoms Monera, Protista & Fungi : 12th Class Biology Notes – NIOS
• Kingdoms Plantae & Animalia : 12th Class Biology Question Answer Lesson 3 – NIOS
• Cell Structure & Function : 12th Class Biology Question Answer Lesson 4 – NIOS
• Tissues & Others Level of Organization : 12th Class Biology Question Answer Lesson 5 – NIOS
• Root System : 12th Class Biology Question Answer Lesson 6 – NIOS
• Shoot System : 12th Class Biology Question Answer Lesson 7 – NIOS
• Absorption, Transport & Water Loss (Transpiration) in Plants : 12th Class Biology Q Ans Lesson 8 – NIOS
• Nutrition in Plants – Mineral Nutrition : 12th Class Biology Question Answer Lesson 9 – NIOS
• Nitrogen Metabolism : 12th Class Biology Question Answer Lesson 10 – NIOS
• Photosynthesis : 12th Class Biology Question Answer Lesson 11 – NIOS
• Respiration in Plants : 12th Class Biology Question Answer Lesson 12 – NIOS
• Nutrition and Digestion : 12th Class Biology Question Answer Lesson 13 – NIOS
• Respiration and Elimination of Nitrogenous Wastes : 12th Class Biology Q Ans Lesson 14 – NIOS
• Circulation of Body Fluids : 12th Class Biology Question Answer Lesson 15 – NIOS
• Locomotion and Movement : 12th Class Biology Question Answer Lesson 16 – NIOS
• Coordination & Control : The Nervous & Endocrine Systems | 12th Class Biology Q Ans Lesson 17 – NIOS
• Homeostasis : The Steady State – 12th Class Biology Q Ans Lesson 18 – NIOS
• Reproduction in Plants : 12th Class Biology Question Answer Lesson 19 – NIOS
• Previous:Growth and Development in Plants : 12th Class Biology Question Answer Lesson 20 – NIOS
• Reproduction and Population Control : 12th Class Biology Q Ans Lesson 21 – NIOS
• Principles of Genetics : 12th Class Biology Question Answer Lesson 22 – NIOS
• Molecular Inheritance and Gene Expression : 12th Class Biology Q Ans Lesson 23 – NIOS
• Genetics and Society : 12th Class Biology Question Answer Lesson 24 – NIOS
• Principles of Ecology : 12th Class Biology Question Answer Lesson 25 – NIOS
• Conservation and Use of Natural Resources : 12th Class Biology Q Ans Lesson 26 – NIOS
• Pollution : 12th Class Biology Question Answer Lesson 27 – NIOS

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