CBSE Class 9 Science Worksheet
Unit 2-Organisation in the Living World - Why do we fall ill?
1.
Choose the correct answer: Unconsciousness targets ______________________.
A)
Lungs
B)
Skin
C)
Liver
D)
Brain
2.
Kala-azar (black fever) is caused by
A)
protozoan
B)
fungus
C)
helminth
D)
bacterium
3.
Choose the correct answer: Kala azar disease is caused by ____________________________.
A)
Plasmodium
B)
Trypanosoma
C)
Leishmania
D)
Virus
4.
Fill in the blanks: ________________ antibiotic blocks the bacterial process that builds the cell wall.
5.
State True or False: Fungal diseses target skin.
A)
TRUE
B)
FALSE
6.
State True or False: Peptic ulcers are caused by eating acidic food.
A)
TRUE
B)
FALSE
8.
Choose the correct answer: Salmonella typhi is a type of ___________________________.
A)
Bacteria
B)
Protozoa
C)
Fungus
D)
Virus
9.
The pathogens od disease are
A)
Bacteria
B)
Virus
C)
Protozoa
D)
All of the above
10.
Penicillin is a drug that can
A)
Interfere in the biological pathway of bacteria
B)
An antibiotic that can kill bacteria
C)
Both a and b
D)
None of the above
11.
Write four different types of diseases.
12.
Choose the correct answer: Chicken pox is caused by _________________________.
A)
Bacteria
B)
Protozoa
C)
Fungus
D)
Virus
13.
State True or False: Cancers can be caused by genetic abnormalities.
A)
TRUE
B)
FALSE
14.
HIV virus attacks one of the following cells in our body
A)
Red blood cells
B)
White blood cells
C)
Liver cell
D)
Long cell
15.
Choose the correct answer: The disease which is transmitted through vectors is _____________________.
A)
Chicken Pox
B)
AIDS
C)
Dengue
D)
Diabetes
17.
Fill in the blanks: ________________ antibiotic blocks the bacterial process that builds the cell wall.
18.
Diarrhea, cholera, typhoid are the diseases that have one thing in common that is
A)
All of them are caused by bacteria
B)
All of them is transmitted by contaminated food and water
C)
All of them are cured by antibiotics
D)
All of the above
19.
Which of the following disease affects our lungs?
A)
Hepatitis
B)
Malaria
C)
Tuberculosis
D)
Typhoid
20.
The bacteria among the following is
A)
Plasmodium
B)
Trypanosome
C)
Rabies virus
D)
Salmonella typhi
CBSE Class 9 Science Worksheet
Unit 2-Organisation in the Living World - Why do we fall ill?
Answers
1.
Option D
2.
Option A
3.
Option C
4.
Penicillin
5.
Option A
6.
Option B
7.
The process because of which the body attains immunity against any due to vaccination.
8.
Option A
9.
Option C
10.
Option D
11.
(i) Acute (ii) Chronic (iii) Infectious (iv) Non-infectious
12.
Option D
13.
Option A
14.
Option D
15.
Option C
16.
The process because of which the body attains immunity against any due to vaccination.
17.
Penicillin
18.
Option D
19.
Option C
20.
Option B
