Answer: The protozoan → Trypanosoma. Give one an example. Question 3. Anita told the masses to clean the breeding grounds of mosquitoes, to add oil on the water bodies and clean all the areas, where stagnant water was present. (b) The surroundings should be neat, and clean. Example, cancer. If someone in the family gets infectious disease, what precautions will you advice to the other family members? Health of an organism depends upon the surrounding environment conditions. NCERT Solution for Class 9 science - why do we fall ill 187 , Question 4. The solutions provided are reviewed by the expert team and carefully designed to score maximum marks on the lines of the CBSE exam. As a result, improper digestion ability, we lose appetite and absorption of food is slow. These symptoms basically indicate that there might be a disease, but we cannot predict the kind of disease. Which of these diseases are the major health problems in your area? Control: Use of quinine drug, keeping the surroundings clean with no stagnant water, use of mosquito repellent creams, nets, can control the spread of this disease. We are normally advised to consume bland and nourishing food when we are sick so that we can get the nutrients and energy quickly to fight off the foreign disease- causing agents. Name two diseases caused by protozoa. The following precautions must be taken by a doctor/ nurse/ health-worker: (i) Wearing a mask when in contact with a diseased person. What would help us to find out (a) that the baby is sick? (iv) Certain diseases such as AIDS can spread via blood to blood contact during blood transfusion or pregnancy. Tuberculosis, typhoid, diarrhoea, cholera, Malaria, amoebiasis, kala-azar, sleeping sickness. Name all the micro-organisms that causes infectious disease and name few diseases caused by each micro-organism. In which of the following case do you think the long-term effects on your health are likely to be most unpleasant? Question 18. The air carries bacteria, virus and the diseases that can be caused are: common cold, influenza, tuberculosis etc. Answer: Also, health is related to society and community, whereas having a disease is about an individual sick person. What are the immunisation programmes available at the nearest health centre in your locality? (a) What is the cause of chickenpox? Question 17. tetracycline, penicillin, chloramphenicol, streptomycin, etc. After reading the chapter, you can refer to our Class 9 NCERT Solutions. What are three limitations for the approach to deal with infectious diseases? Answer: (c) When she is on a four-day fast after recovering from malaria and is taking care of someone suffering from chicken-pox. The twoconditions essential for being free of diseases are: (i) Personal hygiene and cleanliness are necessary to stay away from diseases. In this chapter, we learn about different aspects of health, right from the definition to the treatment of various diseases. Answer/ Explanation (c) It creates immunity in the body. Under which of the following conditions are you most likely to fall sick? Question 3. 1. (8) There should be silence and the patient should be given lot of bedrest to overcome the infection. Example, mosquito, housefly etc. Why Do We Fall Ill? 3. Child immunization programme starts from 0 to 12 years. (c) Staying at home if anyone suffers from infectious diseases. As the person is not taking proper diet which is required for her proper health and healing of body. Question 3. Example, mosquitoes are vectors that carry pathogens like protozoa. Under which of the following conditions are you most likely to fall sick? (c) Students showed moral responsibility and general awareness. Why? (c). Class 9 Science Chapter 13 Important Extra Questions Set – 1 What is meant by the symptoms of a disease? The download options are given after the online solutions option. (4) By rabid animal – rabies Answer: AIDS is Acquired Immuno Deficiency Syndrome, it is caused due to HIV— human immuno deficiency virus. What is immunisation? Question 13. Answer 1: (a) For Good Health: (i) All organs should function properly. Individuals can have poor health without having any identifiable disease. I fell ill twice in the last year. Your email address will not be published. Question 15. Question 8. Of all these diseases, jaundice and typhoid are major health problems. At this stage her body will not be able to fight against infection and if she is taking care of someone else suffering from chicken pox even she can get infected with chickenpox virus and will fall sick again. Our body have cells that are specialised in killing infecting microbes. With reference to the above facts the notion of health and diseases is covered comprehensively in the chapter, Why do We Fall Ill? Consuming impure water is the root cause of many infectious diseases. NCERT Solution for Class 9 science - why do we fall ill 188 , Question 3, A baby is not able to tell her/his caretakers that she/he is sick. Answer: Question 1. No spices in the food makes its digestion process faster, does not release acids in the body that can interfere in the treatment and cure. (b) when she has recovered from malaria and is taking care of someone suffering from chicken-pox. Answer: We are advised to take bland and nourishing food when we are sick because our body needs energy to release cells to overcome the infection, the wear and tear of body organ.