Frank solutions for Biology [English] Class 9 ICSE chapter 20 - Health: Causes of Diseases [Latest edition]

Define the following:
Disease

Define the following:
Pathogen

Define the following:
Infection

Define the following:
Incubation period

Write short notes on the following:
Communicable diseases

Write short notes on the following:
Non-communicable diseases

Write short notes on the following:
Epidemic diseases

Write short notes on the following:
Sporadic diseases 

Name three bacterial diseases with their causal organisms.

Name any two human diseases caused by viruses. Give their symptoms and methods of treatment.

What do you understand by infectious disease? Discuss any one disease.

Write a brief account on the following disease:
Tuberculosis

Write a brief account on the following disease:
Diphtheria

Write a brief account on the following disease:
Influenza

Write a brief account on the following disease:
Measles

Write a brief account on the following disease:
Malaria

Write a brief account on the following disease:
Filaria

What are the symptoms of diabetes insipidus?

List Various Organisms Which Cause Human Disease. (Atleast 5)

What are the main causes of human heart diseases?

Write the full forms of AIDS. Name the causative germ. How is this disease transmitted?

Match the items given in Column A with the appropriate item of Column B:

Fill in the blank:
A reaction caused by the body to some foreign is called ______.

Fill in the blank:
The causative agent of malaria is a _______.

Fill in the blanks:
Small pox is caused by ______ whereas diphtheria is caused by ______.

Fill in the blank:
Rabies is a disease ______.

Fill in the blank:
Filariasis is caused by ______.

Differentiate between the following pair:
Endemic and Pandemic disease.

Differentiate between the following pair:
Sporodic and Epidemic disease.

Differentiate between the following pair:
Infectious and non-infectious disease.

Differentiate between the following pair:
Congenital and Acquired disease

Answer the following:
Three diseases caused by bacteria.

Answer the following:
The category of germs which causes rabies, small pox and mumps

Answer the following:
Name of the disease spread by dog.

Answer the following:
Two diseases caused by parasitic worms.

Answer the following:
Any two degenerative diseases.

State whether the following statement is True or False:
Anopheles mosquito spread elephantiasis marked by swelling of lower limbs.

State whether the following statement is True or False:
Gonorrhoea is a disease which is caused which is caused by bacterium tryponema palladium.

State whether the following statement is True or False:
Allergy is due to hypersentiveness of tissue to certain substances

Mention whether the following statement is true (T) or false (F).

Goitre is endemic in sub-Himalayan regions of India. 

State whether the following statement is True or False:
AIDS is caused by bacteria

State whether the following statement is True or False:

Plague is an epidemic disease.

The question has four options. Choose the correct answer:
Which one of the following is a hormonal disease?

The question has four options. Choose the correct answer:
Dehydration results from

The question has four options. Choose the correct answer:
Elephantiasis is caused by

The question has four options. Choose the correct answer:
Which of the following diseases has been eradicated?

The question has four options. Choose the correct answer:
A viral disease is

The question has four options. Choose the correct answer:
Cancer is