•      Food is any substance which is consumed to provide nutritional support to our body.

•      We obtain our food from plants and animals.

•      Like: we get bread and cereal from wheat, corn or grains.

•      We get all dairy and meat items from animals.

•      Many plants and plant parts are also consumed as food.

•      Seeds of plants are also a good source of food for animals.


Table 1: Different Food Components Obtained From Plants and Animals




  1. Nikita eats junk food every day. Ekta eats fresh fruits and vegetables. Which one of them is taking a proper diet?

Ans: Ekta is following a proper diet because fresh fruits and vegetables provide us with essential nutrients.


  1. We get energy from carbohydrate rich foods. But if consumed in excess amount, it can lead to fatty disorder called obesity. What could be the possible reason for it?

Ans: Excess carbohydrate gets converted into fats and get stored in the body leading to obesity.


  1. In 400 m race, an athlete ran 200 m and after sometime he got fainted and fell down. The athlete was immediately provided with glucose solution. He stood up and ran again at a greater speed. How did this happen?

Ans: Glucose solution contains carbohydrates which gives instant energy to the body. This energy helped the athlete to run faster again.


  1. Aakash was very thin. Someone advised him to consume milk, pulses, soyabean in his diet daily. After few months, he observed a gradual change in his weight. His muscles became stronger. What was present in those foods which made his muscles strong?

Ans: The food like milk, cheese, pulses, and soyabean contains proteins which helps in building the muscles and makes it stronger.


  1. Anuj carries tiffin box to his school regularly. He usually takes healthy & balanced diet. But one day he forgot to carry the tiffin box. He ate food from the road side vendor. The very next day Anuj got ill. What made him fell ill?

Ans: The uncovered food made him fall ill as Anuj consumed stale food which contained germs.


  1. Aditya goes to bed early and wakes up early. But one such day, he sat in front of the computer and started playing games. While playing, he had no idea about the time and he didn’t sleep the whole night. He continued this routine for 2 to 3 days and fell sick. Why did this happen?

Ans: Aditya fall sick because of the inadequate sleep which resulted in the improper functioning of his body organs.


  1. Read the given report carefully : Birju was affected by this disease through contaminated food. The incubation period of these bacteria is 14-21 days i.e. the symptom of disease appears after 14-21 days. What is the name of the disease?

Ans: As per the report shown, its mode of infection and the incubation period of the organism it can be concluded that Birju is suffering from typhoid.


  1. Read the following data given in the graph below certain questions asked below. 

(i)         In the age group of 2-5, in the year 2000, how many children were obese (overweight)?

(ii)        In the age group of 12-19, what is the lowest number of obese children?

(iii)       In the age group of 6-11, what is the highest number of obese children?

(iv)       In which year and age group there are the highest number of obese children?

(v)        In which year there is least number of overweight children?

(vi)       What interpretation can you draw from this graph?


I.          In age group of 2-5, in the year 2000, 10 children were obese.

II.        Approximately 5 children are obese in age group of 12-19.

III.       Approximately 18-19 children are obese in age group of 6-11.

IV.       In 2004 and age group of 6-11, there were highest no. of obese children.

V.        In the year 1974, there were lowest no. of overweight children.

VI.       This graph shows the no. of obese children from the year 1974 to 2004. In the year 2004 the number of obese children was highest.


  1. Read the given data carefully and describe it.

I.          Which food components are more essential according to the data given in the chart?

II.        Should we consume fruits and vegetables more than milk and milk products?

III.       This chart shows that fats, oils, and sweets should be consumed in large amount every day. True or false

IV.       Meat, fish, and nuts should be consumed more than cereals. True or false? Why?

V.        According to the data given, is exercise important for our body? Why?

VI.       What does blue colour in the chart indicates?

VII.     Which food components should be consumed in least quantity?

VIII.    Give a suitable title for this chart?


I.          Cereals, legumes and water

II.        No, as per the data given, both food components should be consumed in equal amount.

III.       False

IV.       False, cereals should be consumed more because it contains almost all the vital nutrients as compared to meat, fish, and nuts.

V.        Yes, exercise is important for our body as it helps to maintain our health and keeps our body fit.

VI.       The blue colour in the chart indicates the consumption of food components (including regular exercise) in larger amount than any other food component.

VII.     Fats, oils, and sweets should be consumed in least quantity.

VIII.    Balanced diet chart/ Food pyramid pie chart.


  1. Read the given report carefully.

I.          Compare the given report. Who is likely to suffer from iron deficiency? Why?

II.        Which disease is caused due to iron deficiency?



I.          Shruti Mehta is likely to suffer from iron deficiency because her hemoglobin count is less than the normal.

II.        Anaemia is caused due to iron deficiency.