Topic # 1: MICROORGANISMS

1.Microorganisms is defined as.

1. Tiny creatures.
2. Non-living things.
3. Cannot be seen with naked eye.
4. None of them.

2.Microorganisms came into being on Earth.

1. 1.3 to 1.7 billion years.
2.  2.5 to 2.6 billion years.
3. 0.5 to 1.1 billion years.
4. 1.2 to 1.5 billion years.

3.Fossil microbes have been found in rocks.

1. 3.3 to 3.5 billion years.
2. 4.5 to 4.6 billion years.
3. 1.0 to 1.5 billion years.
4. 2.1 to 2.5 billion years.

4.Most of the microorganisms are either.

1. Necessary for life.
2. Good for us.
3. Can be used for our benefit in industry.
4. All of the given.

TOPIC#2: USEFULNESS OF MICROBES

5.__________found in the soil to fixate nitrogen which is required to grow many crops.

1. Algae.
2. Fungi.
3. Rhizobacteria
4. All of them.

6._______________ are responsible for recycling of organic matters.

1. Microorganisms.
2. Bacteria.
3. Archea.
4. Protozoa.

7.______________produce oxygen in the ocean.

1. Blue green algae.
2. Cyanobacteria.
3. Both.
4. None of them.

8.Decomposition is defined as.

1. Breakdown of any material to finished compost.
2. Breakdown of raw material to finished compost.
3. Simply raw materials convert to finished compost.
4. All of the given.

9.In food industry, microorganisms used to make.

1. Cheese and yogurt.
2. Bread and dough products.
3. Alcohol production.
4. All of the given.

10.In medicine industry, microorganisms used for.

1. Vaccine production.
2. Cheese production.
3. Beer production.
4. Milk production.