Health and Hygiene Goyal Brother Solutions ICSE Class-9 Biology Ch-17

Health and Hygiene Goyal Brother Solutions ICSE Class-9 Biology Ch-17. We Provide Solutions of Exercise-17 Health and Hygiene Goyal Brother Prakashan ICSE Class-9 Ch-17. All Type exercise question such as name the following, difference between, MCQs, Answer the question. Visit official Website CISCE  for detail information about ICSE Board Class-9.

ICSE Class-9 Biology Ch-17 Health and Hygiene Goyal Brother Solutions

Board ICSE
Publications Goyal Brother Prakashan
Subject  Biology
Class 9th
Writer Dr. S.K. Aggarwal
Chapter-17 Health and Hygiene
Topics Solutions of  Exercises-17
Edition for 2022-2023 Academic Session

Ch-17 Health and Hygiene

Goyal Brother Prakashan ICSE Class-9 Biology Solutions


Question 1. Complete the following sentences by selecting a suitable word from the choices given within brackets:

(i) A viral disease which spreads by sexual contact is ….AIDS… (syphilis/ AIDS/rabies)

(ii) Tapeworm belongs to the genus ..Ascaris.. (Ascaris/Taenia)

(iii) Innate immunity is ..inborn… (inborn/acquired/artificial)

(iv) Vaccine is dead or weakened …microbe… (drug/medicines/microbe)

(v) DPT vaccine provides immunization against …pertussis…. (polio/pertussis/typhoid)

(vi) Dettol is a/an ..antiseptic...  (antiseptic /deodorant / disinfectant)

Question 2. Write the odd one out and give a reason in support of your answer:

(i) Typhoid, Tuberculosis, Chickenpox, Cholera.—-

Ans:- Chickenpox due to viral disease while other are bacterial disease.

(ii) AIDS, Chicken pox, Hepatitis, Malaria—

Ans:- Malaria,

(iii) AIDS, Smallpox, Diphtheria, Measles—

Ans:- Diphtheria,

Question 3. List the causal organisms, symptoms, mode of transmission and preventive measures of the following diseases :

(i) Cholera

(ii) Malaria

(iii) Tuberculosis

(iv) Typhoid

(v) Ascariasis

(vi) AIDS

(vii) Hepatitis B

(viii) Amoebic dysentery

Answer :

refer to page number 171,172, 173 chart.

Question 4. Name the following:

(i) The antibiotic which was first discovered.— penicillin,

(ii) The state of body when all the organs are working well.—- Healthy

(iii) The scientist who discovered vaccination—Edward Jenner

(vi) The immunity developed after vaccination– acquired immunity

(v) The serum containing antibodies—  antiserum,

Question 5. Mention if the following statements are true or false. If false, rewrite the wrong ones in the correct form by changing only the words printed in bold face:

(i) Alexander Fleming discovered Sulphonamide.

(ii) Serum containing antibodies is called Antiserum.

(iii) Vaccine gives Active Immunity to the body.

Answer :

(i) False, Alexander Fleming discovered penciline

(ii) True

(iii) False, Vaccine gives Passive Immunity to the body.

Question 6. Match Column I with Column II:

Column I Column II
(i) Antiseptic (a) Strong chemicals used to destroy microbes on floors, toilets, etc.
(ii) Antiserum (b) Penicillin
(iii) Disinfectant (c) Extracts of toxins secreted by bacteria
(iv) Toxoid (d) Chemicals applied locally on skin to destroy bacteria
(v) Antibiotic (e) Serum containing antibodies.


Column I Column II
(i) Antiseptic (d) Chemicals applied locally on skin to destroy bacteria
(ii) Antiserum (e) Serum containing antibodies.
(iii) Disinfectant (a) Strong chemicals used to destroy microbes on floors, toilets, etc.
(iv) Toxoid (c) Extracts of toxins secreted by bacteria
(v) Antibiotic (b) Penicillin

Question-7. Choose the most appreciate answer

(i) DPT stands for:

(a) Diphtheria, Polio and Tetanus

(b) Diphtheria, Pertussis and Tetanus

(c) Dysentery, Polio and Typhoid

(d) Diphtheria, Polio and Typhoid.

Ans: Option (b) Diphtheria, Pertussis and Tetanus

(ii) Which of the following diseases are infectious?

(a) Degenerative diseases

(b) Allergies

(c) Communicable diseases

(d) Deficiency diseases.

Ans:  Option (c) Communicable diseases

(ii) A vaccine is

(a) An extract of toxins secreted by bacteria

(b) A chemical applied on skin to destroy bacteria

(c) Dead or weakened microbes

(d) Strong chemical which destroys microbes on floor, toilet, etc.

Ans:–option is (c) Dead or weakened microbes

(iv) Lysol, carbolic acid, iodine and benzoic acid are:

(a) Antiseptics

(b) Disinfectants

(c) Vaccines

(d) Deficiency diseases.

Ans;– Option (a) Antiseptics

(v) Chemicals produced by certain microorganisms to suppress the growth of other microorganisms are called

(a) Antiseptics

(b) Antibiotics

(c) Toxoids

(d) Bisinfectants

Ans:– (c) Toxoids

(vi) Antiserum contains:

(a) Antibodies

(b) Platelets

(c) Antigens

(d) WBCs

Ans:  (a) Antibodies

(vii) Active immunity is obtained by:

(a) Injecting weakened germs

(b) Injecting antibodies from another organism

(c) Antibodies produced by the body in response to a previous infection

(d) Administering antibiotics

Ans:- (c) Antibodies produced by the body in response to a previous infection

(viii) The first vaccine was developed by:

(a) Alexander Fleming

(b) William Harvey

(c) Edward Jenner

(d) Robert Hooke

Ans:- (c) Edward Jenner

(ix) The first vaccine was developed to provide protection from:

(a) Polio

(b) Smallpox

(c) Chickenpox

(d) Tuberculosis

Ans:- (b) Smallpox

Question 8. Complete the following paragraph by filling in the blanks (i) to (v) with appropriate words :

A (i) ..Balene diet.… diet provides the body with all the essential (ii) …nutrients.…. like proteins, carbohydrates, fats, (iii) ...Vitamin… and minerals for its proper growth and maintenance. Deficiency in quantity of food may lead to (iv) .undernutrition … ,  while the deficiency in essential nutrients leads to (v) ..malnutrition. . Besides other factors, imbalances in the diet lead to ill health or diseases.

Question 9. Define the following terms:

(i) Disease–any harmful deviation from the normal structural or functional state of an organism, generally associated with certain signs and symptoms and differing in nature from physical injury.

(ii) Endemic disease– diseases present in particular reason.

(iii) Pandemic disease–A pandemic is a disease outbreak that spreads across countries or continents. It affects more people and takes more lives than an epidemic

(iv) Vaccine–a mild form of a disease that is put (injected) into a person or an animal’s blood using a needle (an injection) in order to protect the body against that disease

(v) Immunity–a condition of being able to resist a particular disease especially through preventing development of a pathogenic microorganism or by counteracting the effects of its products

(vi) Antibiotic—A drug used to treat infections caused by bacteria and other microorganisms.

(vii) Antiseptic—These drugs are applied to living tissues to kill the bacteria and to stop their growth in wound, thus preventing its infection. Antiseptics do not heal the wound but prevent the wound from getting infected. Dettol

(viii) Serum–the clear, yellowish fluid that remains from blood plasma after clotting factors (such as fibrinogen and prothrombin) have been removed by clot formation

Question 10. Differentiate between:

(i) Antiseptic and Disinfectant.–. Disinfectants are used to kill germs on nonliving surfaces. Antiseptics kill microorganisms on your skin

(ii) Active and Passive Immunity.-–Active immunity occurs when our own immune system is responsible for protecting us from a pathogen. Passive immunity occurs when we are protected from a pathogen by immunity gained from someone else

(iii) Vaccine and Antiserum–Vaccine is a preparation that is used to stimulate the body’s immune response against diseases while antiserum is a blood serum containing antibodies against specific antigens, injected to treat or protect against specific diseases

Question 11. What are the two broad types of diseases?

Answer : Diseases can be grouped into two types: communicable , which are caused by pathogens and can be transferred from one person to another, or from one organism to another – in humans these include measles, food poisoning and malaria. non-communicable , which are not transferred between people or other organisms

Question 12. Define communicable diseases and give three examples.

Answer : A communicable disease is a disease that spreads from one person or animal to another ex- HIV, hepatitis A, B and C, measles, salmonella, measles, and blood-borne illnesses.

Question 13. Define non-communicable diseases and give three examples.

Answer : The diseases that are caused due to the improper functioning of a body organ are called non-communicable disease. These diseases are neither passed on from one person to another nor caused by pathogens ex cancers, chronic respiratory diabetes.

Question 14. What is a pathogen?

Answer : A pathogen is an organism that causes disease.

Question 15. Mention the general methods of prevention and control of diseases.

Answer : The infectious diseases may be prevented in one of two general ways: (1) by preventing contact, and therefore transmission of infection, between the susceptible host and the source of infection and (2) by rendering the host unsusceptible, either by selective breeding or by induction of an effective artificial immunity.

Question 16. Expand BCG, ORS, AIDS and DPT.

Answer : BCG-Bacillus Calmette- Guerin vaccine,  ORS–Oral rehydration solutions, , AIDS — Acquired Immune Deficiency Syndrome,  DPT– Diphtheria-pertussis-tetanus

Question 17 Name three diseases each caused by bacteria and viruses

Answer : bacterial diseases include cholera, diphtheria, bacterial meningitis, tetanus, Lyme disease, gonorrhea, and syphilis Viruses cause familiar infectious diseases such as the common cold, flu HIV/AIDS, COVID-19

Question 18. Name three diseases caused by parasitic helminths. Give their causal organisms.

Answer : The most common helminthiases are those caused by infection with intestinal helminths, ascariasis, trichuriasis, and hookworm,

Question 19. What is the importance of keeping the hair, teeth and finger nails clean? How would you keep them clean?

Answer : skin, hair and nails and good oral hygiene are all factors that contribute to keeping healthy. Personal hygiene is  important for good health,

Question 20. What are body’s own lines of defense?

Answer : Skin, tears and mucus are part of the first line of defence in fighting infection. They help to protect us against invading pathogens

Question 21. What are health aids?

Answer : antiseptic and disinfections antitoxin serum antibiotic immunity are main health aids.

Question 22. Mention two functions each of

(a) World Health Organisation—The main functions of WHO are: (i) To promote in co-operation with other specialized agencies, the improvement of nutrition like drinking water and sanitation, housing, economic and working conditions, environmental hygiene, and maternal and child health, including family planning

(b) Red Cross– To extend relief and help to the victims of any calamity – fire, flood, famine, earthquakes, etc. To procure and supply blood for the victims of war and other calamities. To extend all possible first-aid in an accident.

–: End of Health and Hygiene Goyal Brother Solutions ICSE Class-9 :–

Return to:- ICSE Biology for Class 9 Goyal Brothers Prakashan solutions


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