are deficiency diseases? Write four deficiency diseases and the associated
Ans. Diseases caused due
to lack of specific nutrients in our diet are called deficiency diseases.
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? Comment
Ans. 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.
food taste good but are not healthy and nutritious food are healthy but not
always taste good. Comment
Ans. 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.
should we drink 6-8 glasses of water every day even when water does not provide
Ans. 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
It 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
the function of food in our body?
Ans. Food provides
essential nutrients for proper functioning of our body.
Q37. Why is
roughage important in our diet?
Ans. Roughage is important
because it provides bulk in our intestines and helps us to get rid of
undigested waste and cleans our digestive system.
are the three types of carbohydrates?
Ans. The three types of
carbohydrates are sugar, starch and cellulose.