The World of Micro Organisms TS TET MCQ 2025 PDF

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The World of Micro Organisms TS TET MCQ for Students

Viruses can be seen using

a. Simple microscope

b. Compound microscope

c. Electron microscope

d. None

Option c – Electron microscope

The branch of science known as microbiology deals with

a. Fungi

b. Algae

c. Viruses

d. Microorganisms

Option d – Microorganisms

Spirulina is utilized in making

a. Medicines

b. Proteins

c. Carbohydrates

d. Both a and b

Option d – Both a and b

The first person to study microorganisms was

a. Jenner

b. Ross

c. Leeuwenhoek

d. Robert Hooke

Option c – Leeuwenhoek

Which microbe helps turn milk into curd?

a. E. coli

b. Yeast

c. Rhizobium

d. Lactobacillus

Option d – Lactobacillus

The umbrella-shaped growth on decaying waste materials is called

a. Rhizopus

b. Azolla

c. Nostoc

d. Mushroom

Option d – Mushroom

Microbes that depend on other living beings for growth are called

a. Parasites

b. Saprophytes

c. Autotrophs

d. Heterotrophs

Option a – Parasites

The term “animalcule” was originally used to describe

a. Viruses

b. Bacteria

c. Fungi

d. Algae

Option b – Bacteria

When buttermilk is mixed with warm milk, what happens?

a. Milk gets spoiled

b. Curd forms within 2–3 hours

c. Curd forms after a long time

d. No curd forms

Option b – Curd forms within 2–3 hours

Which chemical is commonly used for staining bacteria?

a. Methylene blue

b. Methyl orange

c. Janus green

d. Crystal violet

Option d – Crystal violet

Fungi can be observed growing on

a. Moldy bread

b. Pond water

c. Grape juice

d. Buttermilk

Option a – Moldy bread

Lactobacillus is found in

a. Water

b. Rotten vegetables

c. Buttermilk

d. Bread

Option c – Buttermilk

Protozoa can be seen in

a. Pond water

b. Hay infusion

c. Bread

d. Potato

Option b – Hay infusion

Harmful microorganisms that cause diseases can spread through

a. Air

b. Water

c. Carriers like insects

d. All of the above

Option d – All of the above

Washing hands with soap before meals is important because

a. It’s a body cleansing routine

b. It keeps hands hygienic

c. It makes hands fragrant

d. It increases appetite

Option b – It keeps hands hygienic

The study of microbiology began in the year

a. 1674

b. 1686

c. 1574

d. 1474

Option a – 1674

A single-lens microscope can enlarge objects up to

a. 3 times

b. 300 times

c. 3,000 times

d. 30 times

Option b – 300 times

The term “animalcules” refers to

a. Bacteria

b. Fungi

c. Algae

d. All of these

Option a – Bacteria

The green filamentous growth in stagnant pond water is mainly