Why do we fall Ill? | Chapter Assessment | English | Grade 9

Find odd one out.

• Dengue

• AIDS

• Typhoid

• Influenza

Answer explanation

Typhoid is a bacterial disease. All others are viral disease.

Find odd one out.

• Cholera

• Tuberculosis

• Anthrax

• Influenza

Answer explanation

Influenza is a viral disease. All others are bacterial disease.

Which of the following infected person can make healthy person ill?

• High blood pressure

• Genetic abnormalities

• Sneezing

• Diabetes

Answer explanation

Sneezing can spread the disease from infected person to healthy person.

Chiku had a loose motion. Then what is the immediate cause for his illness?

• Sneezing

• Entry of a microorganism by street food

• Mosquito bite

• Dog bite

Answer explanation

As immediate cause of diarrhoea is microorganisms, which can be enter in the body by eating street food.

Choose the correct option which shows a long term effect on the health of an individual?

• Common cold

• Chicken pox

• Chewing tobacco

• Typhoid

Answer explanation

Chewing tobacco can cause oral cancer, which effects in long term.

Sneha is infected by a ringworm. Which medicine should doctor prescribe to her?

• Anti bacterial

• Anti viral

• Anti protozoal

• Anti fungal

Answer explanation

Ringworm is caused by fungal, hence doctor must prescribe her a anti fungal medicine.

To cure tuberculosis ________ drugs are given to patient.

• Anti bacterial

• Anti viral

• Anti protozoal

• Anti fungal

Answer explanation

Tuberculosis is caused due to bacteria called mycobacterium tuberculosis. Hence it is bacterial disease. So to cure tuberculosis antibacterial medicines are given.

Which of the following is not a means of transmission of disease?

• Sexual contact

• Microorganism

• Water

• Exercise

Answer explanation

Exercise can not transfer any disease. Others can transfer disease. Hence option 4 is correct.

Children are given polio vaccine because ____________

• vaccination kills the polio causing microorganisms

• prevents the entry of polio causing organism

• it creates immunity in the body

• all of these

Answer explanation

A vaccine builds our immunity towards a particular disease. Vaccination creates immunity in the body, so even if the disease causing organism enters in the body, vaccine will reduce the chances of contracting the disease. Hence option 3 is correct answer.

An animal bit Kajal. The doctor found poison in her body and gave antidote to her. Then which of the following animal must have bite Kajal?

• Cat

• Snake

• Dog

• Tiger

Answer explanation

As we know snake bites and injects poison in our body, which can cause death also. If proper antidote is given then live can be saved. Hence option 2 is correct answer.