Question

True/False( Correct the false statements)
1. All microorganisms are harmful and cause diseases in plants and animals.
2. All diseases are communicable diseases, caused by pathogens. Which of these helps to trap air in the soil?
a. Tilling
b. Burrowing action of earthworms
c. Levelling
d. Both a. and b.
Choose the correct option.
1. Which of these is a thin sheet of glass that is used to cover the sample viewed under a microscope?
a. Slide
b. Coverslip
c. Stage
d. Mirror
2. Which of these diseases can be prevented by a vaccine?
a. Cholera and ringworm
b. Poliomyelitis and chicken pox
c. Malaria and ringworm
d. All of these
3. Which of these found in milk coagulates to form curd?
a. Lactobacillus
b. Casein
c. Acid in milk
d. None of these​

Answer 1

Answer:

1false

2 True

McQ

1 slide

2 all of these

3 Lactobacillus

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Answer 2

Answer:

1. False- not all microorganisms are harmful.

2.False- most bacteria are not pathogens.

3.d

1.c

2.b

3.a