I. Tick (✓) the correct option to complete each sentence.

1. 

Ans. sudden death

2.

Ans. Worm infections 

3. 

Ans. Red blood cells 

4.

Ans. Vitamin A and D 

5. 

Ans. Edible oils 

II. Tick (✓) the true statements and cross (×) the false ones.

1. ×

2. ✓

3. ✓

4. ×

5. ✓

III. Answer the following questions in one sentence.

1.

Ans. Protein helps the body to grow.

2. 

Ans. Calcium is important for the body because it makes bones and teeth strong.

3.

Ans. Lack of iron in our body causes anemia.

4.

Ans. Goitre can be prevented by consuming suffice amount of iodine in our daily diet.

5. 

Ans. Fibre is an impossible part of our diet because it cleanse our digestive system.

6. 

Ans. Potassium rich food items - a. tomatoes b. dates

IV. Answer the following questions in two sentences.

1.

Ans. A diet that contains all the necessary nutrients in the right amount.

2.

Ans. Malnutrition is a condition of body when it doesn't get proper amount of nutrients it needs.

3.

Ans. The symptoms of a child suffering from protein energy malnutrition are less body weight, weakness, appearance of arms and legs as skin and bones, child becomes inactive, dull and looks dull and falls sick often.

4.

Ans. Lack of vitamin C in our body causes scurvy. Symptoms of scurvy are - swollen or bleeding gums and wounds that may fail to heal.

5. 

Ans. The babies and children must be exposed to sunlight because sunlight is the source of vitamin D.

6.

Ans. When a person does not eat a balanced diet, he or she will not grow properly as well as will fall sick often because the body of that person will not be able to fight diseases

V. Answer in about four to five sentences.

1. 

Ans. The body needs a regular supply of clean water because water ensures proper functioning of the body.  Besides water is needed for the following reasons:

     a. All the chemical reactions in the body take place in a watery medium.

     b. It is a major component of the blood and every cell.

     c. It maintains body temperature.

     d. It helps in digestion.

     e. It helps in cleaning body by forming urine.

2.

Ans. 

i. Vitamin A : It keeps eyes and skin healthy. Carrot, spinach, fish, papayas, leafy vegetables are the source of vitamin A.

ii. Vitamin B complex : It keeps muscles, brain and nerves healthy. It helps in making red blood cells. Whole grain, nuts, gram, bean, pea, soya bean, mung, milk, curd liver, meat, fish, egg, spinach etc. are the sources of Vitamin B complex.

iii. Vitamin C: It keeps gums and skin healthy, helps in healing cuts, builds immunity. Citrus fruits are the rich sources of vitamin C.

iv. Vitamin D: It makes bones and teeth strong healthy, keeps our skin healthy. Sunlight, fish, liver oil, eggs some mushrooms are the sources of vitamin D.

3.

Ans. A teaspoon of cooked rice is taken. After grinding it into powder, 2-3 dropa of iodine is added. The colour of the food will change to bluish black colour. It indicates the presence of starch.

4.

Ans. i) calcium: it makes bones and teeth strong.

ii) iron: iron is needed by the body to make red blood cells.

iii) potassium: it helps to keep the muscles, brain and neeves healthy.

iv) iodine it is needed for the proper growth of the body. 

5. 

Ans. Some cooking practice which can lead to loss of nutrients are:

1. Overheating or overboiling of food.

2. Repeated washing of rice and pulses.

3. Washing vegetables after cutting.