Question

Biology question:-
class - 9
Short answers:-

1) Against what disease BCG vaccine is given ?
2) What is immune system?
3) Define congenital diseases ?
4) Write the symptoms when following organs are targeted by microbes :- a) lungs, b) liver ,c) brain
5) What are communicable diseases ?
6) Name the disease which cause swollen of gums?​

Answer 1

1) Against what disease BCG vaccine is given ?

Ans) BCG vaccine is given, when a person is suffering from "Tuberculosis".

2) What is immune system?

Ans) Immune system is a system of our body which protects us from various diseases- causing agents.It fight against pathogens and keep our body healthy.

3) Define congenital diseases ?

Ans) Congenital diseases are those types of disease which are present in someone's body from the birth. This is due to genetic abnormalities or metabolic disorder.

4) Write the symptoms when following organs are targeted by microbes :- a) lungs, b) liver and c) brain

Ans) a) Lungs - Cough, breathlessness, b) liver - jaundice and c) brain - headache, vomiting

5) What are communicable diseases ?

Ans) Communicable diseases are those diseases which can be transferred from infected person to healthy person, are spread through microbes. Eg:- Malaria, influenza.

6) Name the disease which cause swollen of gums?

Ans) Scurvy is a disease which cause swollen and bleeding of gums.

Answer 2

Answer:

The immune system protects your child's body from outside invaders, such as bacteria, viruses, fungi, and toxins (chemicals produced by microbes). It is made up of different organs, cells, and proteins that work together. There are two main parts of the immune system: The innate immune system, which you are born with.

congenital disorder is a medical condition that is present at or before birth. These conditions, also referred to as birth defects, can be acquired during the fetal stage of development or from the genetic make up of the parents.

The signs and symptoms of a disease will thus depend on the tissue or organ which the microbe targets. If the lungs are the targets, then symptoms will be cough and breathlessness. If the liver is targeted, there will be jaundice. If the brain is the target, we will observe headaches, vomiting, fits or unconsciousness