Microorganisms: Friend And Foe Mock Tests

26 questions available

Microorganisms: Friend And Foe Mock Test 1

Questions: 26

Sample Questions

Class 8 Science

Which of the following is a natural method of nitrogen fixation?

A Industrial Haber process

B Lightning

C Use of nitrogenous fertilisers

D Legume root nodules (human-assisted)

Class 8 Science

Which type of microorganism causes malaria in humans?

A Bacteria

B Fungi

C Protozoa

D Algae

Class 8 Science

Rhizobium bacteria live in the roots of which type of plants?

A Wheat

B Rose

C Gram (pulse crops)

D Maize

Class 8 Science

Which of the following is a prokaryotic cell?

A Amoeba

B Paramecium

C Escherichia coli

D Spirogyra

Class 8 Science

Which of the following is a natural method of nitrogen fixation?

A Industrial Haber process

B Blue-green algae (cyanobacteria)

C Electric discharge in atmosphere

D Both b and c

Class 8 Science

Which of the following microorganisms fixes atmospheric nitrogen in the soil?

A Rhizobium

B Chlamydomonas

C Yeasts

D Plasmodium

Class 8 Science

Which non-metal is used in water purification systems to kill bacteria and viruses?

A Nitrogen

B Chlorine

C Carbon

D Sulphur

Class 8 Science

Rhizobium bacteria are found in the root nodules of which plant family?

A Grasses

B Legumes

C Rose family

D Solanaceae

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