Free Printable Class test on microorganisms

Worksheets

Class test on microorganisms

Total questions: 20

Worksheet time: 7mins

Name

Class

Date

Fungi is benefical to us because of the following reason:

They are a source of oxygen

They can clean up pollution

They are a source of antibiotics

They help to clean run off from waste

Which of the following is an example of a harmful microorganism?

Fungi used as antibiotics

Ecoli on food that makes people sick

Bacteria found in yogurt.

Microorganisms helping dead matter to decay

What is true about bacteria?

Bacteria use photosynthesis to make their own food

Bacteria can only be found in dirt

Bacteria is always beneficial

Bacteria can be used to make certain foods

Four students in Mrs. Sterling's class make the following observations. Choose which student is correct

Shelby says that all microorganisms are found in the ocean. Some are helpful, but some are harmful. It's best to shower after swimming at the beach.

Garry says that all microorganisms are harmful. This is why we must get vaccinations and antibiotics from the doctor.

Ireland says that some microorganims are helpful and some are harmful. The best way to protect ourselves from harmful microbes is to wash our hands with soap and water.

Jonathan says it's impossible to become sick from bacteria. Only viruses and fungi can make a person sick. Make sure to sneeze in your elbow to prevent the spread of germs.

Four of Mrs. Sterling's students go to Burger Bistro. Two become sick. Choose which answer gives the best evidence as to why the students became sick.

Isabela and Sam become sick because they do not like the dressed up characters at Burger Bistro.

James and and Sheela become sick because they did not have enough money to buy a souvenir.

Sam and James become sick because they ingested some chicken at the food stand that had bacteria on it.

Isabella and Sheela become sick because they washed their hands too many times while at the park.

Bacteria is known as__________________ in an ecosystem when feeding on dead organisms.

Decomposers

Herbivore

Pathogens

Infections

Mushroom belongs to

Algae

Virus

Fungi

None of the above

Which microbe produces oxygen?

Fungi

Algae

Bacteria

Protozoa

Rhizopus (bread mould) is an example of

Virus

Fungi

Bacteria

Protozoa

10.

The smallest microorganism on earth is known as _____________

a virus

bacteria

algae

fungi

11.

_________ convert atmospheric nitrogen into plant usable form

viruses

protozoa

bacteria

fungi

12.

Why is a microscope needed to view cells?

to separate cells from each other

to make cells look bigger than they are

to make cells look smaller than they are

to hold the cells still so they can be seen

13.

Bacteria are made up of how many cells?

trillions!

14.

This organism is visible with the naked eye

True

I do not know

False

It is both visible and microscopic

15.

Algae tend to develop on wet surfaces.

True

False

16.

The gas released during the preparation of bread is:

(a)

17.

Microorganisms are never found in a

hot water spring.

ice cold water.

marine water.

none of these.

18.

Which of the following is the characteristic feature that distinguishes an algae from fungi?

Heterotrophic

Autotrophic

Parasitic

Sporophytic

19.

What is an example of a decomposer?

a squirrel

a fox

a mushroom

a hawk

20.

The picture shows a protozoan. What type of protozoan can you see?

Paramoecium

Euglena

Amoeba

Reset

Class test on microorganisms

Total questions: 20

Worksheet time: 7mins

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