CHAPTER – 3
EXERCISE
1. Find the odd one out and give reasons
(i) Jowar, Bajra, Ragi, and Chana
Answer: Chana
Reason: Jowar, Bajra, and Ragi are millets (cereals), whereas Chana is a pulse (legume).
(ii) Kidney beans, Green gram, Soybean, and Rice
Answer: Rice
Reason: Kidney beans, green gram, and soybean are pulses (rich in protein), while rice is a cereal (rich in carbohydrates).
2. Traditional vs Modern Culinary Practices in India
Answer:
Traditional cooking methods in India involved the use of earthen or bronze utensils, grinding grains with stone grinders (chakki), and cooking over firewood stoves (chulha).
Modern cooking uses gas stoves, microwaves, mixers, and pressure cookers. These methods are faster, more convenient, and efficient due to technological advancements in transport and communication.
3. “All tasty foods are not healthy, and all healthy foods are not always tasty.” Discuss
Answer:
Many tasty foods such as fried chips, sweets, and sugary drinks are unhealthy because they contain excess fat and sugar with low nutritional value.
On the other hand, nutritious foods like green vegetables, fruits, and millets may not always taste very appealing but are essential for maintaining good health.
4. Which food would you prefer and why?
(i) Canned fruit juice
(ii) Fresh fruit juice
(iii) Fresh fruit
Answer:
Fresh fruit is the best choice because it contains natural vitamins, minerals, and dietary fiber without added sugar or preservatives. Fresh juice is also healthy but lacks fiber, while canned juice often contains added sugar and preservatives.
5. Why does sugar not turn blue-black with iodine solution?
Answer:
Iodine solution is used to test the presence of starch. Sugar is a simple carbohydrate and does not contain starch, so it does not change the color of iodine solution.
6. Why are millets considered healthy? Can they alone meet all nutritional needs?
Answer:
Millets are rich in fiber, protein, vitamins, and minerals such as calcium and iron. They are also environmentally friendly as they require less water and fewer pesticides.
However, millets alone cannot fulfill all nutritional requirements. A balanced diet that includes cereals, pulses, fruits, vegetables, and dairy is necessary for overall health.
7. Choose the correct answer
(i) Disease caused by deficiency of Vitamin D:
(a) Loss of vision
(b) Beriberi
(c) Scurvy
(d) Rickets
Answer: (d) Rickets
(ii) Disease caused by deficiency of Vitamin C:
(a) Loss of vision
(b) Scurvy
(c) Rickets
(d) Anaemia
Answer: (b) Scurvy
(iii) Disease caused by deficiency of Vitamin A:
(a) Loss of vision
(b) Bone and tooth decay
(c) Beriberi
(d) Scurvy
Answer: (a) Loss of vision
(iv) Disease caused by deficiency of Iron:
(a) Anaemia
(b) Loss of vision
(c) Beriberi
(d) Scurvy
Answer: (a) Anaemia
8. Name two foods rich in the following nutrients
(a) Fats:
Answer: Ghee, almonds
(b) Starch:
Answer: Rice, potatoes
(c) Dietary fibre:
Answer: Whole grains, apples
(d) Protein:
Answer: Lentils, eggs
Additional Questions
9. Fill in the blanks
(i) The main source of energy in our diet is ___________.
Answer: Carbohydrates
(ii) Milk is rich in ___________.
Answer: Calcium
(iii) Deficiency of iron causes ___________.
Answer: Anaemia
(iv) Fruits and vegetables are rich in ___________ and minerals.
Answer: Vitamins
10. True or False
(i) A balanced diet contains all nutrients in the right proportion.
Answer: True
(ii) Junk food is good for health.
Answer: False
(iii) Proteins help in body building.
Answer: True
(iv) Vitamins provide energy to the body.
Answer: False
11. Short Answer Questions
(i) What is a balanced diet?
Answer: A balanced diet contains all nutrients in the right proportion needed for good health.
(ii) Why should we avoid junk food?
Answer: Junk food is high in fat and sugar and lacks essential nutrients.
(iii) What are protective foods?
Answer: Foods rich in vitamins and minerals that protect us from diseases, like fruits and vegetables.
(iv) Name two energy-giving foods.
Answer: Rice and bread
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