(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Biology

Give suitable explanations for the following :

Hands must be washed before eating food.

Give suitable explanations for the following :

Eating places must be kept free of flies.

Which one of the following is an unhealthy habit?  

Name the two types of dysentery and their causative germs and give one main precaution against them.

Name the following: 

Organisms that transmit microbes that cause disease.

A disease widely spread worldwide is known as

Use of disposable syringes for injecting medicines, etc. is specially advised to prevent

Mention Whether the Following Statement is True (T) Or False (F).

HIV is a serious disease, usually fatal.

Mention Whether the Following Statement is True (T) Or False (F).

AIDS is not transmitted by contact with a patient's clothes.

The expanded form of AIDS is

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

AIDS is caused by a fungus.

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

Hay fever and asthma are allergies. 

What are the different ways in which infectious diseases can spread?

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

Smallpox still occurs in India.

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

The disease filariasis is caused by the bite of the female anopheles mosquito.

Name any four non-infectious diseases and their causes.

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

Name the following:

A disease that weakens the body's defence system against infections. 

Write very briefly about the following:

BCG

Name the following:

Germ of germ-substance introduced into the body to prevent occurrence of an infectious disease.