MEDIUM
8th CBSE
IMPORTANT
Earn 100

While returning from the school, Boojho ate chaat from a street hawker. When he reached home, he felt ill and complained of stomach ache and fell ill. What could be the reason?

Important Questions on Microorganisms Friend and Foe

MEDIUM
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 2 - Microorganisms Friend and Foe>SHORT ANSWER QUESTIONS>Q 20
What will happen to ‘pooris’ and ‘unused kneaded flour’ if they are left in the open for a day or two?
EASY
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 2 - Microorganisms Friend and Foe>SHORT ANSWER QUESTIONS>Q 21
Name two diseases that are caused by virus.
MEDIUM
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 2 - Microorganisms Friend and Foe>SHORT ANSWER QUESTIONS>Q 21
Write one important characteristic of virus.
EASY
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 2 - Microorganisms Friend and Foe>LONG ANSWER QUESTIONS>Q 22

Observe the figure and answer the question given below:

Okra Leaf with Yellow Vein Mosaic Vrus

Write the name of the disease (contain three words).

EASY
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 2 - Microorganisms Friend and Foe>LONG ANSWER QUESTIONS>Q 22

Observe the figure and answer the question given below:

Question Image

Write whether this disease is caused by a virus or a protozoan.
EASY
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 2 - Microorganisms Friend and Foe>LONG ANSWER QUESTIONS>Q 22

Observe the figure and answer the question given below:

Question Image

Write whether this disease spread from one plant to another by whitefly or aphid?

MEDIUM
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 2 - Microorganisms Friend and Foe>LONG ANSWER QUESTIONS>Q 22
Name any two plant diseases and the microbes that cause them.
HARD
8th CBSE
IMPORTANT
NCERT Exemplar Science - Class 8>Chapter 2 - Microorganisms Friend and Foe>LONG ANSWER QUESTIONS>Q 23
How do vaccines work?