Ques 1: Name the five main components of food.
Ans: The five main components of food are:
Ques 2: What is roughage? How does it help us?
Ans: Roughage is the undigested part of the plant food. It helps in moving the food easily through our digestive system and help in proper removal of wastes from our body.
Ques 3: List any four things that are essential for remaining healthy.
Ans: The four things are essential for remaining healthy are:
Ques 5: What do you understand by a balanced diet?
Ans: A diet that contains adequate amounts of different components of food required for the healthy functioning of our body is called balanced diet.
Ques 6: Why do we need food?
Ans: We need food for the following reasons:
Ques 7: Why do we need proper rest and exercise?
Ans: We need proper rest because lack of rest will bad to improper functioning of our body organs.
Exercise help us to stay fit and healthy it improves our blood circulation and makes us happy and active.
Ques 8: Why do cotyledons shrink and disappear?
Ans: The cotyledons shrinkhand disappear because now the leaves will make food.
Ques 9: What will happen if farmers will not leave any space between the seed while sowing them in a field?
Ans: If he will not leave space while sowing them some will not grow as they will struggle for nutrients, water etc.
Ques 10: What is the use of spraying pesticides on crops?
Answer: The use of spraying pesticides on crops is to protect them from pests.
Ques 11: Differentiate between non-communicable and communicable diseases.
Ans: Difference is as follows:
|Communicable Disease||Non-communicable Disease|
|1. Communicable disease are those diseases that can spread from one person to another.||1. Non-communicable disease are those disease that do not spread from person to another.|
|2.The reasons for these diseases can be, Direct contact, Sharing of personal items like food, clothes of infected person, Transfer of germs by insects and mosquitoes.||2. The reasons for these diseases is the deficiency of any of the important component of the food.|
|3. Examples of communicable disease are – common cold and tuberculosis.||3. Examples of non-communicable disease are – scurvy and rickets.|
Ques 13: What are deficiency diseases? Discuss any 6 deficiency diseases their cause and the food that can be eaten to overcome them.
Answer: Deficiency diseases are those diseases that happen because of deficiency of any one component of food in the diet. These are also called non-communicable diseases.
|Deficiency diseases||Caused by the lack of|
Food containing the vitamins/minerals
|Night blindness||Vitamin A||Papaya, mango, carrot, milk|
|Beriberi||Vitamin B1||Milk, peas, cereals|
|Scurvy||Vitamin C||Amla, lemon, orange, tomato|
|Rickets||Vitamin D||Milk and milk products, sunlight|
|Anemia||Iron||Spinach, apple, brinjal, meat|
Ques 14: Describe any two communicable diseases?
Ans: Two communicable diseases are:
(b) Symptoms:- High level and red spots on the body.
(c) Prevention and cure:-
(b) Symptoms: High fever, constant shivering and vomiting.
(c) Prevention and cure:
Ques 16: Define hygiene. Mention any five ways to maintain proper hygiene
Ans: Hygiene may be defined as practices that help to ensure cleanliness and good health.
The five ways are:
Ques 17: Define vaccination?
Answer: Vaccination is the use of the special substances called vaccines to prevent specific diseases.
Ques 18 : Define antibiotic?
Ans: Substances that can kill diseases -causing organisms are called antibiotics.
Ques 19: What causes diseases like typhoid and and cholera?
Ans: These diseases are caused by consuming contaminated food or water.
Ques 20: Define allergy?
Ans: Some people are sensitive to dust or certain foo, animal or drugs. Exposure to such subtances make these people ill causing itching, sneezing, rashes, etc. This condition is called allergy.