Microorganisms: Friend and Foe (CBSE Class-8 Science): Questions 25 - 33 of 46

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Question number: 25

» Microorganisms: Friend and Foe » Microorganisms » Protozoa and Algae

MCQ▾

Question

Another name of Algae is

Choices

Choice (4) Response

a.

Thallus

b.

Brown algae

c.

Pond scum

d.

Green algae

Question number: 26

» Microorganisms: Friend and Foe » Microorganisms » Bacteria and Fungi

MCQ▾

Question

Fungi which emit light is

Choices

Choice (4) Response

a.

Penicilliumnotatum

b.

Downy mildew

c.

Armillariamellea

d.

Rizopus

Question number: 27

» Microorganisms: Friend and Foe » Food Preservation » Heat and Cold Treatments

MCQ▾

Question

Pasteurization is used for preservation of

Choices

Choice (4) Response

a.

Vegetables

b.

Milk

c.

Fruits

d.

Drinks

Question number: 28

» Microorganisms: Friend and Foe » Microorganisms » Bacteria and Fungi

MCQ▾

Question

Largest fungi which is also used as food is

Choices

Choice (4) Response

a.

Mildews

b.

Mushrooms

c.

Yeast

d.

Mould

Question number: 29

» Microorganisms: Friend and Foe » Microorganisms » Bacteria and Fungi

MCQ▾

Question

The bacteria helps in the formation of curd is:

Choices

Choice (4) Response

a.

Azotobacter

b.

Acetobacteraceti

c.

Lactobacillus

d.

Salmonella typhi

Question number: 30

» Microorganisms: Friend and Foe » Commercial Use of Microorganisms » Vaccine

MCQ▾

Question

Diseases prevented by vaccination are

Choices

Choice (4) Response

a.

Diphtheria, Cholera

b.

Dengue and Malaria

c.

Small pox, tuberculosis, measles

d.

Both a. and c. are correct

Question number: 31

» Microorganisms: Friend and Foe » Microorganisms » Protozoa and Algae

MCQ▾

Question

Name algae which is natural source of silica is

Choices

Choice (4) Response

a.

Diatoms

b.

Nostoc

c.

Chlorella

d.

Red algae

Question number: 32

» Microorganisms: Friend and Foe » Microorganisms » Bacteria and Fungi

MCQ▾

Question

Nitrogen fixing bacteria are:

Choices

Choice (4) Response

a.

Rhizobium, Azotobacter

b.

Escherichia Coli, Peneumococcus

c.

Lactobacillus, Salmonella typhi

d.

Treponema, Vibrio

Question number: 33

» Microorganisms: Friend and Foe » Microorganisms » Bacteria and Fungi

MCQ▾

Question

Name the micro-organism helps in formation of bread.

Choices

Choice (4) Response

a.

Yeast

b.

Bacteria

c.

Protozoa

d.

Virus

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