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Class 6 Science Chapter 3 Food For Healthy Life
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Food For Healthy Life
Chapter: 3
PART – I
EXERCISE
1. Find the odd one out and give reasons:
(i) Jowar, Bajru, Ragi and Chana.
Ans: Odd one out: Chana.
Reason: Jowar, Bajra, and Ragi are millets (cereals), whereas Chana is a pulse (legume).
(ii) Kidney beans, Green gram, Soybean and Rice.
Ans: Odd one out: Rice
Reason: Kidney beans, green gram, and soybean are pulses (rich in protein), while rice is a cereal (rich in carbohydrate).
2. Discuss the traditional versus modern culinary practices in India.
Ans: Traditional cooking methods involved using earthen or bronze pots, manual grinding with stone grinders (chakki), and cooking over open fire furnaces (chulha). Modern cooking uses gas stoves, microwaves, electric grinders, and pressure cookers, which are faster and more efficient due to advances in technology, transport, and communication.
3. All delicious foods are not necessarily healthy while not all nutritious food taste good. Discuss with few examples.
Ans: Delicious foods like fried potato chips, candies, and sugary drinks taste good but are often unhealthy because they contain high fat, sugar, and low nutrients. Nutritious foods like millets or leafy vegetables may not always taste sweet or flavorful but are important for health.
4. Three food items are given below:
(i) Canned fruit juice.
(ii) Fresh fruit juice.
(ii) Fresh fruit.
Which food item would you prefer to eat and why?
Ans: Fresh fruit, because it contains natural vitamins, minerals, and fiber without added sugar or preservatives. Fresh fruit juice is good but may lack fiber, and canned juice often contains added sugar and preservatives.
5. Sugar is an example of carbohydrate. If sugar is tested with iodine solution it does not change its colour to blue-black, What can be the possible reason?
Ans: Iodine tests for starch (a complex carbohydrate). Sugar is a simple carbohydrate (glucose or sucrose) and does not contain starch, so it does not react with iodine.
6. Why are millets considered as a healthy choice of food? Can millet consumption alone suffice for the nutritional requirement of the body. Discuss.
Ans: Millets are rich in proteins, fiber, calcium, iron, and other minerals, making them highly nutritious. They require less water and pesticides, which makes them sustainable. However, millets alone cannot provide all nutrients; a balanced diet including other food groups is essential.
7. Darken the circle of the correct answer.
(i) Which of the following diseases is caused by the deficiency of vitamin D?
(a) Loss of vision.
(b) Beriberi.
(c) Scurvy.
(d) Rickets.
Ans: (d) Rickets.
(ii) Which of the following diseases is caused by the deficiency of vitamin C?
(a) Loss of vision.
(b) Scurvy.
(c) Rickets.
(d) Anaemia.
Ans: (b) Scurvy.
(iii) Which of the following diseases is caused by the deficiency of vitamin A?
(a) Loss of vision.
(b) Bone and tooth decay.
(c) Beriberi.
(d) Scurvy.
Ans: (a) Loss of vision.
(iv) Which of the following diseases is caused by the deficiency of iron?
(a) Anaemia.
(b) Loss of vision.
(c) Beriberi.
(d) Scurvy.
Ans: (a) Anaemia.
8. Name two foods each rich in:
(a) Fats.
Ans: Ghee, nuts (almonds).
(b) Starch.
Ans: Rice, potatoes.
(c) Dietary fibre.
Ans: Whole grains, fresh fruits (apples).
(d) Protein
Ans: Lentils, eggs.
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