Components of Food
Q24. What are deficiency diseases? Write four deficiency
diseases and the associated nutrients.
Diseases caused due to lack of specific nutrients in our diet are called
Q25. Identify the disease a person is suffering from?
Write the symptoms of the
Ans. Symptoms are:
Swelling at the base of neck
Tight sensation in the throat and the neck.
A large goiter may cause difficulty in swallowing
Suggest what kind of diet should be taken to
avoid such disease.
Ans. By using iodized table salt simple
goitre can prevented.
Q26. A plate full of colorful food items is a healthy plate?
A plate full of colorful items is considered healthy when it is colorful due to
varieties of fruits and vegetables. Color due to synthetic colors is unhealthy
and such food items should be avoided.
Q27. Junk food taste good but are not healthy and nutritious
food are healthy but not always taste good. Comment.
Our tongue craves for junk food as they taste food. But we know that junk food contains
only calories and lack other important nutrients and hence they are not good
for our health. Healthy food sometimes does not taste good but contain
nutrients that our body needs to function well.
Q28. Why should we drink 6-8 glasses of water every day even
when water does not provide any energy?
We should drink 6-8 glasses of water every day because
It is important for proper digestion and
absorption of nutrients.
It also flushes out toxins and waste from
regulates body temperature.
Q29. While showing experiment to the children in the laboratory,
few drops of iodine fell on teacher’s sari. The drops of iodine on the sari
turned blue black. State the possible reason for change of color.
A blue-black color results if starch is present. Sari might have been starched and
starch always gives blue black color with iodine.
Q30. Ravi did not eat vegetables but likes to eat ice-cream,
pizza, biscuits, noodles and sandwich. He always complains about stomach ache
and constipation. Suggest him food item that he should include in his diet to
get rid of the problem.
Junk food does not contain roughage. He may be suffering from stomach ache due
to lack of roughage in his diet. He should take diet that includes whole
grains, pulses, fruits and vegetables. Roughage helps to get rid of waste
material easily and hence cure constipation.
Q31. Write all components of food that provide nutrients
required by our body.
Carbohydrates, fats, proteins, vitamins and minerals
Q32. Write the component of food which does not provide any
nutrients but are very important for proper functioning of our body.
Ans. Roughage and water
Q33. Why do nursing mothers need more protein in their diet?
Nursing mother needs extra protein because the milk that is fed to the baby
should be rich in protein and the mother's body needs lot of proteins to form
Q34. Why do we need Vitamin C in our diet?
We need vitamin C in our diet because:
Lack of Vitamin C may result in delay in
It is needed for skin formation.
It improves immunity and helps us to fight
It is important for protein metabolism in
Q35. Our body need minerals and vitamins in very small
quantities, still they are important. Why?
They are important as
they help body to fight against many
for proper growth of the body
for maintaining good health
Q36.What is the function of food in our body?
Food provides essential nutrients for proper functioning of our body.
Q37. Why is roughage important in our diet?
Roughage is important because it provides bulk in our intestines and helps us
to get rid of undigested waste and cleans our digestive system.
Q38. What are the three types of carbohydrates?
The three types of carbohydrates are sugar, starch and cellulose.