Class 5 Living Science Ratnasagar
- Tick the correct answers
- To stay healthy our body needs:
a) a balanced diet (Correct Answer)
b) books
c) bread
d) only milk
- Which of the following is a non-communicable disease?
a) chicken pox
b) beriberi (Correct Answer)
c) common cold
d) measles
- This disease is caused by a virus:
a) typhoid
b) meningitis
c) malaria
d) chickenpox (Correct Answer)
- The spread of communicable diseases like polio and measles can be prevented by:
a) spitting
b) coughing
c) keeping clean
d) having medicines
- Vaccination can protect against diseases like polio, measles and:
a) AIDS
b) malaria
c) mumps (Correct Answer)
d) fever
- Fill in the blanks
- Our body needs a balanced diet, protection from diseases, regular exercise, and sleep to keep it fit.
- Our food should have enough roughage to get rid of undigested food.
- We must play outdoor games to keep our body fit.
- Typhoid and cholera are caused by bacteria.
- AIDS is a virus that attacks the immune system of the patient and leads to death.
C.) Match the columns
| Nutrient | Deficiency Disease | Symptoms of Disease |
| Vitamin A | Night blindness | Patient cannot see in dim light. |
| Vitamin B | Beriberi | Affects the nervous system. |
| Vitamin C | Scurvy | Bleeding gums. |
| Vitamin D | Rickets | Bones become soft. |
| Iodine | Goitre | A gland in the neck region swells up. |
D) Write short answers
- What is a deficiency disease?
Answer:- A deficiency disease is a disease caused by the lack of one or more nutrients in our diet.
- Name a disease caused by the lack of iron in food.
Answer:- Anaemia.
- What is a communicable disease?
Answer:- A communicable disease is a disease that spreads from a sick person to a healthy person through germs.
- Which diseases are caused by eating contaminated food?
Answer:- Cholera and typhoid.
V) Name three diseases for which you have been vaccinated.
Answer:- Polio, measles, and mumps.
- Answer these questions
- How do houseflies spread disease?
Answer:- Houseflies carry germs from dirty places to food. They sit on garbage, dirty places, and human or animal waste. Germs stick to their legs and body. When they sit on uncovered food, they transfer these germs to the food. People who eat such contaminated food may suffer from diseases like cholera, typhoid, and dysentery.
- What precautions would you take to check the spread of malaria?
Answer:- To prevent malaria, we should not allow water to collect in coolers, pots, or drains. Keep the surrounding clean and dry, and use mosquito nets and repellents.
- Explain two ways of controlling communicable diseases.
Answer:- Maintain personal hygiene by washing hands and keeping the surroundings clean, take vaccinations, and avoid close contact with infected people.
- What steps would you take to prevent the spread of germs from a sick person?
Answer:- Cover the mouth while coughing or sneezing, wash hands regularly, do not share personal items, and keep the sick person away from others if needed.
- What is meant by pasteurization of milk?
Answer :- Pasteurization is the process of heating milk to kill harmful germs and then cooling it quickly to make it safe to drink.
- Raju has bleeding gums and swollen joints. Name the disease he is suffering from. What is the cause and remedy of this disease?
Answer:- Raju is suffering from scurvy. It is caused by a lack of vitamin C. The remedy is to eat foods rich in vitamin C, such as oranges, lemons, guavas, and amla.
Think and answer
1) Vijay always has snacks like potato chips, noodles, and burgers. Mohan spends his holidays sitting in front of the computer. He does not play any outdoor game or do any other form of exercise. What could both of them be asking for?
Answer:- Both Vijay and Mohan may become overweight because of unhealthy eating habits and lack of exercise. They may also become weak, sick, and develop health problems.