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  Biology>Nutrition>Components of Food  
      
1. State the important functions and sources of energy-rich nutrients (carbohydrates and fats). (5 marks)
      
2. How will you experimentally establish that groundnuts contain carbohydrates, proteins and fats? (5 marks)
      
3. Write a short note on nutrition. (5 marks)
 
Your Answer:
Nutrition is the process by which organisms obtain energy for growth, maintenance and repair of damaged tissues. We get nutrition from the food we eat.The food we eat should be balanced, it must contain correct proportions of all essential nutrients along with sufficient quantities of water and roughage.Excessive intake of food also leads to diseases such as obesity, hypervitaminosis, etc.
Evaluation:
I have evaluated your answer. You have scored 3 out of 5.
To get maximum marks, your answer should include the following points (you have missed the ones marked in red):
  1. Definition: Nutrition is the process by which organisms obtain energy for growth, maintenance and repair of damaged tissues.
  2. Components of food and its functions: Carbohydrates, fats, proteins, etc.
  3. Balanced diet: Food constituents in correct proportion.
  4. Deficiency-diseases: Kwashiorkor, marasmus, anaemia, goitre, etc.
  5. Excessive intake of foods: Obesity, hypervitaminosis.
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