Read the following statements about diseases.
(i) They are caused by germs.
(ii) They are caused due to lack of nutrients in our diet.
(iii) They can be passed on to another person through contact.
(iv) They can be prevented by taking a balanced diet.
Which pair of statements best describe a deficiency disease?
Given below are the steps to test the presence of proteins in a food item.
(i) Take a small quantity of the food item in a test tube, add 10 drops of water to it
and shake it.
(ii) Make a paste or powder of food to be tested.
(iii) Add 10 drops of caustic soda solution to the test tube and shake well.
(iv) Add 2 drops of copper sulphate solution to it. Which of the following is the correct sequence of the steps?
Read the food items given below.
(iii) Iodized salt
(iv) Spinach (palak)
Which of the above food items are “energy giving foods”?
Q2) Name the following:
(a) The nutrients which mainly give energy to our body.
(b) The nutrients that are needed for the growth and maintenance of our body.
(c) A vitamin required for maintaining good eyesight.
(d) A mineral that is required for keeping our bones healthy.
Q4) Tick (√) the statements that are correct.
(a) By eating rice alone, we can fulfill the nutritional requirement of our body,
(b) Deficiency diseases can be prevented by eating a balanced diet.
(c) A balanced diet for the body should contain a variety of food items.
(d) Meat alone is sufficient to provide all nutrients to the body.
Q5) (a) ________ is caused by deficiency of Vitamin D.
(b) Deficiency of_ causes a disease known as beri-beri.
(c) Deficiency of Vitamin C causes a disease known as____ .
(d) Night blindness is caused due to deficiency of___ in our food. Answer.
Unscramble the following words related to components of food and write them in the space provided.
While using iodine in the laboratory, some drops of iodine fell on Paheli’s socks and some fell on her teacher saree. The drops of iodine on the saree turned blue black while their colour did not change on the socks. What can be the possible reason?
Paheli and Boojho peeled some potatoes and cut them into small pieces. They washed and boiled them in water. They threw away the excess water and fried them in oil adding salt and spices. Although the potato dish tasted very good, its nutrient value was less. Suggest a method of cooking potatoes that will not lower the nutrients in them.
Paheli avoids eating vegetables but likes to eat biscuits, noodles and white bread. She frequently complains of stomach ache and constipation. What are the food items that she should include in her diet to get rid of the problem?
Shyam was having difficulty in seeing things in dim light. The doctor tested his eyesight and prescribed a particular vitamin supplement. He also advised him to include a few food items in his diet. Which deficiency disease is he suffering from?
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