SSLC (English Medium) Class 9 - Tamil Nadu Board of Secondary Education Question Bank Solutions

The most fatal form of malaria is caused by ______.

Mosquito-borne viral diseases are ______.

The use of ______ drugs kills the stages of the malaria parasite.

Nilavembu kudineer is known to increase ______.

Filaria is transmitted by the bite of an infected Culex mosquito.

Malaria is caused by the fungal parasite plasmodium.

Assertion: Chikungunya is transmitted in humans by the bite of an infected Aedes aegypti mosquito during the daytime.
Reason: Chikungunya is caused by Rotavirus.

Define the following:

Vector

Why is dengue also known as break-bone fever?

Name two diseases transmitted by the Aedes aegypti mosquito?

What is known as a reservoir of infection? Give two examples.

Sanjay had an attack of chickenpox and has just recovered. The health officer of his locality says that the disease would not occur again. What would be the reason for this?

Name the different species of protozoa plasmodium.

When Malar, who is suffering from high fever, muscle, and joint pain, undergoes a blood test, it was found that her blood platelet was decreased.

1. What disease is Malar infected with?
2. How is the disease transmitted?
3. How can it be treated?

How is typhoid prevented and treated?

We are advised to take bland and nutritious food when we are sick. What is the reason?

Discuss the strategies to adopt to prevent diseases transmitted through mosquitoes.

Name the causative agent of typhoid in humans. How does the pathogen gain entry into the human body? Write the diagnostic symptoms and mention the organ that is affected in severe cases.

List the applications of sound.

Correct the mistakes:

1.  Washing soda is used for making cakes and bread soft, spongy.
2. Calcium sulphate hemihydrate is used in textile industry for bleaching cloths.