Question 1

Question 1Describe the ways in which communicable diseases are transmitted through various indirect methods.

Accepted Answer

Indirect method of transmission of communicable disease are:From items used by the infected person — Touching and sharing items like towels, handkerchiefs, combs, utensils, etc. of an infected person may spread the disease to a healthy person.Contaminated food and water — Houseflies carry germs from garbage and sewage and deposit them on food. Contamination of drinking water even with little amount of faeces or dung can cause a number of diseases.Droplets through air — The droplets coming out when a person infected with common cold, TB, etc. sneezes or coughs, transmit the disease causing germs through the air spreading the disease to more people.Vectors or carriers — Houseflies, mosquitoes, rodents, etc. also carry disease causing germs.

Question 2

Question 2List 3 ways by which you should keep your environment clean.

Accepted Answer

Three ways to keep the environment clean are:Maintain a clean environment to prevent the spreading of diseases due to the breeding of mosquitoes, houseflies and pathogens.Garbage should be kept in covered bins so that flies do not breed on it.There should be proper sewer lines connected to sewage treatment plants.

Question 3

Question 3(i)Distinguish between Elephantiasis and Malaria on the basis of the mode of transmission.

Accepted Answer

Differences between Elephantiasis and Malaria on the basis of the mode of transmission:ElephantiasisMalariaElephantiasis spreads by the bite of female Culex mosquito.Malaria spreads by the bite of female Anopheles mosquito.

Question 4

Question 4Give two examples of each :Metabolic diseasesGenetic diseasesAllergiesDietary deficiency diseasesCancer

Accepted Answer

Two examples of Metabolic diseases are — diabetes, and kidney stones.Two examples of Genetic diseases are — Haemophilia, and thalassemia.Two examples of Allergies are — Hay fever and Asthma.Two examples of Dietary deficiency diseases are — Beri-Beri and Scurvy.Two examples of Cancer are — Breast cancer, and Leukemia.

Question 5

Question 5Write 'True' and 'False' against each of the following statements :Malaria is an infectious disease.Rickets is caused due to the deficiency of vitamin A.Viruses carry germs from garbage and sewage.Filarial germs are transmitted by the bite of female Culex mosquito.Nightblindness is the disease in which people are not able to see at night even if light is available.

Accepted Answer

TrueReason — Malaria is a disease caused by a protozoan transmitted by mosquito bites, making it an infectious disease.FalseReason — Rickets is caused due to the deficiency of vitamin D.FalseReason — Houseflies, not viruses carry germs from garbage and sewage. Viruses infect cells and replicate within them.TrueReason — Filarial germs are transmitted by the bite of female Culex mosquito.TrueReason — Nightblindness is the Vitamin A deficiency disease in which people are not able to see at night even if light is available.

Question 6

Question 6Define the terms given below :HealthDiseasePathogenAllergenHygiene

Accepted Answer

Health — Health is defined as a state of complete physical, mental and social well-being, and not merely an absence of disease or infirmity.Disease — Any physical or functional change in the body from a normal state which causes discomfort or disability is called a disease.Pathogen — Pathogens are disease-causing germs (microorganisms) that have the potential to cause infectious diseases. For example, viruses, bacteria, protozoans etc.Allergen — Allergens are substances that can trigger an unpredictable allergic reaction in individuals.Hygiene — Hygiene is defined as science and practice of maintaining good health.

Question 7

Question 7Write short notes (1-2 sentences) on each of the following:DiseasePathogenAllergy

Accepted Answer

Disease — Any physical or functional change in the body from a normal state which causes discomfort or disability is called a disease. Disease is a departure from normal health through structural or functional disorder of the body.Pathogen — Micro-organisms which cause communicable diseases are called pathogens. These germs are transmitted through various agencies like air, insect bites, rodent, contaminated food or water, etc. Pathogens may be different kinds of bacteria, viruses, fungi, protozoa or worms.Allergy — Allergy is an unpredictable reaction of the body to a particular substance called allergen. A few common allergens are dust, spores, pollens, certain clothes, particular medicines, cosmetics, etc. Asthma, Eczema, Diarrhoea, Vomiting, Nausea, etc. are some of the common allergic reactions.

Question 8

Question 8(a)What is a non-communicable disease?

Accepted Answer

The diseases which are caused either due to improper functioning of the body organs or due to the deficiency of certain minerals and vitamins in the body are known as non-communicable diseases. These diseases are not caused by any germ, therefore these diseases cannot spread from one person to another (i.e., they are non-transmissible). Examples — rickets, diabetes, heart diseases, etc.

Question 9

Question 8(b)What is a deficiency disease?

Accepted Answer

A disease which is caused due to the deficiency of certain nutrients, vitamins and minerals in the diet is called a deficiency disease. Example - Anaemia, Goitre.

Source: This question is from Disease and Hygiene, Biology &mdash; Class 6, ICSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Disease and Hygiene: Question, Deficiency, Disease, Disease and Hygiene, Biology. These are fundamental topics in Biology that students are expected to master as part of the ICSE Class 6 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your ICSE examinations. These topics are frequently tested in both objective and subjective sections of Biology papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Write Short AnswersShort answer questions require concise, focused responses. Begin with a clear definition or statement that directly addresses the question. Support your answer with one or two key points or examples. Keep your response to 2-4 sentences. Avoid unnecessary elaboration but ensure you cover all parts of the question. Use subject-specific terminology to demonstrate your understanding.
Key Points to RememberUse precise scientific terminology as defined in the textbook.
Draw and label diagrams neatly for full marks.
Understand the difference between structure and function.
Learn processes step-by-step in the correct sequence.
Related Questions from Disease and HygieneQ1: Question 1 Describe the ways in which communicable diseases are transmitted through various...
Q11: Question 8(d) Biting nails should be strictly avoided. Give reason.
Q12: Question 8(e) Regular exercise and proper rest is a must. Give reason.
Q13: Question 8(f) Children eating more fast foods tend to suffer from obesity (overweight). Comment.
Q14: Question 8(g) How can you control the spreading of diseases by mosquitoes and houseflies?
Practice more questions from Disease and Hygiene &mdash; Biology, Class 6 ICSE

Question 10

Question 8(c)What are communicable diseases?

Accepted Answer

The diseases that can easily spread from an infected person to a healthy person through disease causing germs called pathogens are called communicable diseases.

Source: This question is from Disease and Hygiene, Biology &mdash; Class 6, ICSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Disease and Hygiene: Question, Communicable, Diseases, Disease and Hygiene, Biology. These are fundamental topics in Biology that students are expected to master as part of the ICSE Class 6 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your ICSE examinations. These topics are frequently tested in both objective and subjective sections of Biology papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Write Short AnswersShort answer questions require concise, focused responses. Begin with a clear definition or statement that directly addresses the question. Support your answer with one or two key points or examples. Keep your response to 2-4 sentences. Avoid unnecessary elaboration but ensure you cover all parts of the question. Use subject-specific terminology to demonstrate your understanding.
Key Points to RememberUse precise scientific terminology as defined in the textbook.
Draw and label diagrams neatly for full marks.
Understand the difference between structure and function.
Learn processes step-by-step in the correct sequence.
Related Questions from Disease and HygieneQ1: Question 1 Describe the ways in which communicable diseases are transmitted through various...
Q11: Question 8(d) Biting nails should be strictly avoided. Give reason.
Q12: Question 8(e) Regular exercise and proper rest is a must. Give reason.
Q13: Question 8(f) Children eating more fast foods tend to suffer from obesity (overweight). Comment.
Q14: Question 8(g) How can you control the spreading of diseases by mosquitoes and houseflies?
Practice more questions from Disease and Hygiene &mdash; Biology, Class 6 ICSE

Question 11

Question 8(d)Biting nails should be strictly avoided. Give reason.

Accepted Answer

Dirt and many disease causing pathogens get accumulated under the nails. It is difficult to remove them even if we wash our hands frequently. Biting nails may cause these pathogens to enter into our body through our mouth causing various diseases. Hence, biting nails should be strictly avoided.

Question 12

Question 8(e)Regular exercise and proper rest is a must. Give reason.

Accepted Answer

Regular exercise keeps the body muscles active. It helps in the normal functioning of the heart and lungs and also in better circulation of blood. Proper rest helps the body repair, regenerate and recover.

Question 13

Question 8(f)Children eating more fast foods tend to suffer from obesity (overweight). Comment.

Accepted Answer

Fast foods are rich in fats and carbohydrates and deficient in vitamins. Eating more fast foods results in the accumulation of fat in the body of children making them suffer from obesity.

Source: This question is from Disease and Hygiene, Biology &mdash; Class 6, ICSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Disease and Hygiene: Question, Children, Eating, Fast, Foods, Tend. These are fundamental topics in Biology that students are expected to master as part of the ICSE Class 6 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your ICSE examinations. These topics are frequently tested in both objective and subjective sections of Biology papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Write Short AnswersShort answer questions require concise, focused responses. Begin with a clear definition or statement that directly addresses the question. Support your answer with one or two key points or examples. Keep your response to 2-4 sentences. Avoid unnecessary elaboration but ensure you cover all parts of the question. Use subject-specific terminology to demonstrate your understanding.
Key Points to RememberUse precise scientific terminology as defined in the textbook.
Draw and label diagrams neatly for full marks.
Understand the difference between structure and function.
Learn processes step-by-step in the correct sequence.
Related Questions from Disease and HygieneQ1: Question 1 Describe the ways in which communicable diseases are transmitted through various...
Q11: Question 8(d) Biting nails should be strictly avoided. Give reason.
Q12: Question 8(e) Regular exercise and proper rest is a must. Give reason.
Q14: Question 8(g) How can you control the spreading of diseases by mosquitoes and houseflies?
Q15: Question 8(h) Public hygiene is equally important as personal hygiene. Give reasons.
Practice more questions from Disease and Hygiene &mdash; Biology, Class 6 ICSE

Question 14

Question 8(g)How can you control the spreading of diseases by mosquitoes and houseflies?

Accepted Answer

We can control spreading of diseases by mosquitoes and houseflies by using repellents, throwing garbage in covered bins, avoiding stagnation of water and covering all the drains prevent breeding of mosquitoes.

Question 15

Question 8(h)Public hygiene is equally important as personal hygiene. Give reasons.

Accepted Answer

Maintaining public hygiene prevents the spread of communicable diseases like Malaria, Dengue, Cholera, Diarrhoea, etc. Maintaining a clean environment controls the breeding of mosquitoes, houseflies and other pathogens. Hence, public hygiene is equally important as personal hygiene for good health and preventing diseases.

Question 16

Question 9Given below is a crossword puzzle. Read the clues across and clues down, and fill up the blank squares. Check your performance with the correct solutions given at the end of the chapter.Clues down1.	Germs or germ - substances introduced into the body to prevent occurrence of an infectious disease.2.	A disease caused by an infected dog that affects the central nervous system.3.	A disease in which the eyes, the skin and the urine turn yellow.4.	The disease pertussis is popularly known as whooping ...............Clues across1. Category of pathogen that causes diseases like common cold and mumps.5.	This is the vaccine for preventing tuberculosis.6.	An organ usually affected by tuberculosis.7.	Jumbled spelling of one of the most common insect which visits our exposed foods and contaminates them.8.	Cover this part of your body by a handkerchief while sneezing to prevent droplet infection to others.9.	These may readily grow in your hair, if you do not wash it regularly.10. A disease that weakens body's defence system against infections.

Accepted Answer

The solved cross word puzzle is shown below:

Disease and Hygiene

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