UPSC NCERT SCIENCE and TECHNOLOGY NOTES: TOPIC WISE SOLVED MCQ’s

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1. Yeast, used in making bread is a.

a) Fungus

b) Bacteria

c) Plant

d) Seed

Ans: A

2. Red rot of sugarcane is caused by

a) Colletotrichumfalcatum

b) Cercosporapersoruata

c) Alternaria alternate

d) Phylophthorainfestans

Ans: A

3. Yeast is used in the bakery in the preparation of bread because

a) It makes bread hard

b) It makes bread soft and spongy

c) It increases the food value of bread

d) It keeps the bread fresh

Ans: B

4. The disease Athelet foot is caused by

a) Bacteria

b) Fungi

c) Protozoa

d) Nematod

Ans: B

5. Aflatoxins are produced by

a) Fungi

b) Bacteria

c) Algae

d) Viruses

Ans: A

6. Lichens are constituted by

a) Fern and Fungi

b) Algae and Bryophyta

c) Bacteria and Virus

d) Fungi and Algae

Ans: D

7. The smallest prokaryotic organism is known.

a) Microcystis

b) Mycoplasma

c) Bacteria

d) Chlorella

Ans: B

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