Unit Test (Solutions): Mindful Eating: A Path to a Healthy Body - 2 | Science for Class 6 PDF Download

Time: 1 hour  

M.M. 30  

Attempt all questions.  

Question numbers 1 to 5 carry 1 mark each.  

Question numbers 6 to 8 carry 2 marks each.  

Question numbers 9 to 11 carry 3 marks each.  

Question number 12 & 13 carry 5 marks each

Q1: What is dietary fiber? (1 Mark)

Ans: Dietary fibers are the plant deprived food that cannot be completely broken down by the human digestive system. For example- vegetables, fruits, whole grain oats etc.

Q2: Why should we eat cooked food? (1 Mark)
Ans: We should eat cooked food because by cooking we can kill harmful germs and make it germless. Cooked food can be easily digested and absorbed by our body. Cooking also improves the taste of food.
Q3: Match the following food items with their respective nutrients: (1 Mark)
Ans: 

Amla – (iv) Vitamin C

Almonds – (iii) Fats

Wheat – (ii) Carbohydrates

Beans – (i) Protein

Q4: Fill in the blanks with the correct vitamins and minerals based on their functions: (1 Mark)

(a) _________ helps keep eyes and skin healthy and can be found in papaya, carrot, mango, and milk.
(b) The deficiency of Vitamin D can lead to a disorder called _________, which results in soft and bent bones.
(c) _________ helps the body fight diseases and its sources include amla, guava, and green chili.
(d) _________ keeps bones and teeth healthy, and can be sourced from milk, curd, and cheese.

Ans:
(a) Vitamin A
(b) Rickets
(c) Vitamin C
(d) Calcium
Q5: Match the following vitamins/minerals with their deficiency symptoms: (1 Mark)

Ans:

1. Vitamin A – b
2. Vitamin B1 – d
3. Vitamin C – a
4. Vitamin D – c

Q6: What are millets and What are the nutritional benefits of millets? (2 Marks)

Ans: Millets are small-seeded grains that belong to the grass family. They are widely grown around the world and are known for their nutritional benefits. They are good sources of vitamins, minerals like iron and calcium, and dietary fibers as well. That is the
reason they are also called nutri-cereals.

Q7: What is junk food and What are the health risks of consuming junk food? (2 Marks)
Ans: Some foods have high calories due to high sugar and fat content. Moreover, they contain very low amounts of proteins, minerals, vitamins, and dietary fibers. These foods are called junk foods. For example : Pizza, burger, chips and cold drinks etc. Junk food tends to be high in calories, unhealthy fats, sugars, and sodium, while lacking essential nutrients. Regular consumption can lead to weight gain, increased risk of heart disease, diabetes, and other health problems.

Q8: What is dehydration? Write the functions of water in our body. (2 Marks)
Ans: Dehydration is the condition when your body loses more fluid than you take in. Basically, excess loss of water from the body leads to dehydration. Water helps our body to absorb nutrients from the food. It also helps in removing the waste from the body in the form of urine and sweat. We get water from various types of liquids, fruits and vegetables. 

Q9:(i)How will you test for starch in a food sample? (3 Marks)
Ans: Take a small quantity of food samples→Then add 2-3 drops of iodine solution to it→The appearance of a blue-black color indicates that the food sample contains starch.
 (ii) What happens when two or more drops of iodine solution fall on starch substance?
Ans:The color of the substance becomes blue-black.
(iii) If any food item gives blue- black color with iodine then which nutrient is present in the food?
Ans: Starch

Q10: How can you test presence of proteins in a given food item? (3 Marks)
Ans: Take a small quantity of the food item. If the sample is solid, grind it. Put some part of this in a clean test tube, add 10 drops of water to it and shake the test tube. Now, with the help of a dropper, add two drops of solution of copper sulphate and 10 drops of solution of caustic soda to the test tube. Shake well and place the test tube in test tube stand for a few minutes. Observe color of the contents of test tube. If color of the contents turns violet, the food item contains protein.
Food + water + copper sulphate + caustic soda → violet color → protein is present.

Q11:(i) Explain the term "balanced diet" and why it is essential for health. (3 Marks)
Ans: A balanced diet includes all the necessary nutrients—carbohydrates, proteins, fats, vitamins, minerals, roughage, and water—in the right proportions. It is essential because it provides the energy needed for daily activities, supports growth and repair, and helps prevent nutrient deficiency diseases. Eating a balanced diet promotes overall health and ensures that the body functions optimally.
(ii) Why is it important to include roughage in your diet?
Ans: Roughage, also known as dietary fiber, helps in digestion by aiding the smooth passage of food through the digestive system. It prevents constipation and helps maintain a healthy digestive tract.

Q12: Answer the following questions ( 5 Marks)
(i) What are food miles?
Ans: Food miles refer to the distance food travels from where it is grown or produced to where it is consumed.
(ii) How do food miles affect the environment?
Ans: Food miles contribute to carbon emissions and pollution from transportation vehicles, impacting air quality and contributing to climate change.
(iii) What are some ways to reduce food miles?
Ans: Buying locally grown or produced food, supporting farmers markets, and choosing seasonal produce are ways to reduce food miles.
(iv) Give an example of a food item with high food miles and one with low food miles.
Ans: 
1. High food miles example: Fresh strawberries imported from another continent.
2. Low food miles example: Apples grown in a nearby orchard and sold at a local farmers’ market.
(v) What are some examples of foods that are typically imported from other countries?
Ans: Examples may include tropical fruits like bananas or mangoes, coffee, tea, and certain spices.

Q13: Based on the case study, answer the following questions: (5 Marks)
(i)What could be the reason for Ravi's poor vision at night? Which vitamin deficiency is responsible for this condition, and what are some food sources to overcome this deficiency? 
Ans: Ravi’s poor vision at night is likely caused by a deficiency of Vitamin A. This deficiency leads to night blindness. Some food sources rich in Vitamin A include papaya, carrot, mango, and milk.
(ii) The doctor also noticed tingling in Ravi’s hands and feet. Which vitamin deficiency is causing this symptom, and what are the common food sources of this vitamin?
Ans: The tingling sensation in Ravi’s hands and feet is likely due to a Vitamin B1 (Thiamine) deficiency. This condition is known as Beriberi. Common sources of Vitamin B1 include legumes, nuts, whole grains, seeds, and milk products.
(iii) The doctor recommended including calcium in Ravi’s diet. Explain the role of calcium in the body and mention some calcium-rich food items that Ravi should consume. 
Ans: Calcium is essential for maintaining healthy bones and teeth. It helps the body absorb minerals and strengthens the skeletal structure. Calcium also plays a role in muscle function and nerve transmission. Some calcium-rich food items that Ravi should consume are milk, curd, cheese, and paneer.