Chapter 02 Diversity in the Living World Solutions
November 5, 2024Chapter 04 Exploring Magnets Solutions
November 5, 2024Chapter 03 Mindful Eating: A Path to a Healthy Body Text Book Solutions
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Q1: Pick the odd one out and give reasons:
(i) Jowar, Bajra, Ragi, Chana
(ii) Kidney beans, Green gram, Soya bean, Rice
Ans:
(i) Chana – It is a pulse while the others are millets.
(ii) Rice – It is a cereal while the others are pulses.
Q2: Discuss traditional versus modern culinary practices in India.
Ans: Traditional practices involved cooking on chulhas using firewood and grinding spices using sil-batta. Modern practices use gas stoves, electric grinders, and other kitchen appliances. The change is due to technological advancements, improved transportation, and convenience.
Q3: A teacher says that good food may act as medicine. Ravi is curious about this statement and has some questions for his teacher. List at least two questions that he can ask.
Ans:
How does consuming certain foods help in curing diseases?
Can you give examples of foods that act as natural medicine?
Q4: Not all delicious foods are necessarily healthy, while not all nutritious foods are always enjoyable. Share your thoughts along with a few examples.
Ans: Delicious foods like candy bars and carbonated drinks are often high in sugar and fats but low in nutrients. Nutritious foods like spinach and broccoli may not be as enjoyable but are essential for good health. Balancing taste and nutrition is key to a healthy diet.
Q5: Medu does not eat vegetables but enjoys biscuits, noodles, and white bread. He often has stomach ache and constipation. What changes should he make in his diet to get rid of these problems? Explain your Ans.
Ans: Medu should include more vegetables, fruits, and whole grains in his diet to increase fibre intake. This will help in digestion and prevent constipation. Reducing intake of processed foods like biscuits and noodles is also recommended.
Q6: Reshma had trouble seeing things in dim light. The doctor tested her eyesight and prescribed a particular vitamin supplement. He also advised her to include a few food items in her diet.
(i) Which deficiency disease is she suffering from?
(ii) Which food component may be lacking in her diet?
(iii) Suggest some food items that she should include in her diet to overcome this problem (any four).
Ans:
(i) Night blindness
(ii) Vitamin A
(iii) Papaya, Carrot, Mango, Milk
Q7: You are provided the following:
(i) Canned fruit juice
(ii) Fresh fruit juice
(iii) Fresh fruit
Which one would you prefer and why?
Ans: Fresh fruit is preferred as it provides the most nutrients, fiber, and is free from added sugars and preservatives found in canned or processed juices.
Q8: Gourav got a fracture in his leg. His doctor aligned the bones and put on a plaster. The doctor also gave him calcium tablets. On the second visit, the doctor gave him Vitamin D syrup along with calcium tablets.
(i) Why did the doctor give calcium tablets to Gourav?
(ii) On the second visit, why did the doctor give Vitamin D syrup along with calcium tablets?
(iii) What question arises in your mind about the choices made by the doctor in giving the medicines?
Ans:
(i) Calcium tablets help in bone healing and strengthening.
(ii) Vitamin D aids in the absorption of calcium in the body.
(iii) Why is Vitamin D necessary for calcium absorption?
Q9: Sugar is an example of carbohydrates. Sugar is tested with iodine solution but it does not change to blue-black color. What can be a possible reason?
Ans: The iodine test specifically detects starch, a type of carbohydrate, not simple sugars like glucose.
Q10: What do you think of Raman’s statement, “All starches are carbohydrates but not all carbohydrates are starches.” Describe the design of an activity to test your Ans.
Ans: Raman’s statement is correct. To test this, perform the iodine test on different carbohydrates like rice (starch) and sugar (non-starch). Only rice will turn blue-black, confirming the presence of starch.
Q11: While using iodine in the laboratory, a few drops of iodine fell on Mishti’s socks and a few fell on her teacher’s saree. The drops of iodine on the saree turned blue-black while the color on the socks did not change. What can be a possible reason?
Ans: The saree may contain starch or be made of natural fibers that react with iodine, while the socks may be synthetic and do not contain starch.
Q12: Why are millets considered a healthy choice of food? Can eating just millets suffice for the nutritional requirements of the body? Discuss.
Ans: Millets are rich in vitamins, minerals, and dietary fibers, making them a healthy choice. However, a balanced diet requires a variety of nutrients, so relying solely on millets may not meet all nutritional needs.
Q13: You are given a sample of a solution. How would you check the possibility of it being an iodine solution?
Ans: Add the solution to a starch-containing food item like potato. If it turns blue-black, the solution is likely iodine.
Q14: List junk foods you eat frequently. Ask your friends also to make such lists. On the basis of these lists, write a letter to your principal requesting to ban certain junk foods inside the school campus. Suggest some healthy options.
Ans: Example letter:
Dear Principal,
I am writing to request the ban of certain junk foods like candy bars, potato chips, and carbonated drinks from the school campus. These foods are high in sugar and fats but low in essential nutrients, contributing to health issues like obesity and poor nutrition among students.
Instead, we suggest offering healthy options like fruits, nuts, and yogurt in the school canteen. These alternatives will promote better health and well-being for all students.
Thank you for considering our request.
Sincerely,
[Your Name]
Q15: Find out the variation in nutritional requirements of different individuals based on age, physical activity, and health conditions. Record your observations. Discuss and analyse.
Ans: Nutritional requirements vary based on age, physical activity, and health conditions. For example:
Children need more protein for growth.
Athletes require higher carbohydrate intake for energy.
Elderly individuals need more calcium and Vitamin D for bone health.
Pregnant women need more iron and folic acid.
Q16: Prepare a diet chart to provide a balanced diet to a twelve-year-old child. The diet chart should include food items that are not expensive and are commonly available in your area.
Ans:
