Microorganisms Friends and Foe Worksheet-9

Microorganisms Friends and Foe Worksheet-9

1. Which of the following is an incorrect match?

(a) Alexander Fleming – Penicillin

(b) Louis Pasteur – Fermentation

(c) Edward Jenner – Vaccination

(d) Anton von Leeuwenhoek - Sterilization

2. Most fungi develop a multicellular mass of filaments that spreads through the organic matter they are using as food. This mass is called

(a) Mycelium                                 (b) Hypha

(c) Sporangium                            (d) Fruit body

3. Food preservation ensures that the food lasts a longer time without getting spoiled. Which of the following method is used to preserve the food materials?

(a) Drying and dehydration       (b) Sterilization

(c) Saltation and sweetening     (d) All of these

4. Which of the following is a carrier?

(a) Housefly                                   (b) Female Anopheles mosqiutoe

(c) Female Aedes mosquitoe     (d) All of these

5. Heat treatment: Sterilization :: Vaccination : ____

(a) Pasteurization                         (b) Immunization

(c) Fertilization                             (d) Inoculation

6. The type of bacteria shown in the figure

(a) Bacillus        (b) Coccus         (c) Spirillum     (d) Vibrio

7. Match column I with column II and select the correct match from the codes given below.

(a) (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)

(b) (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

(c) (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

(d) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

8. Direction: Read the paragraph and answer

Microorganisms are used for the large scale production of alcohol, wine and acetic acid. X is used for commercial production of alcohol and wine. The process of conversion of sugar into alcohol is known as Y.

What is X?

(a) Lactobacillus                          (b) Streptococcus

(c) Yeast                                         (d) Penicillium

9. Direction: Read the paragraph and answer

Microorganisms are used for the large scale production of alcohol, wine and acetic acid. X is used for commercial production of alcohol and wine. The process of conversion of sugar into alcohol is known as Y.

What is Y?

(a) Decantation                             (b) Fermentation

(c) Aerobic respiration                (d) Distillation

10. Match column I with column II and select the correct match from the codes given below.

(a) (A)-(V), (B)-(IV), (C)-(II), (D)-(I), (E)-(III)

(b) (A)-(II), (B)-(V), (C)-(I), (D)-(III), (E)-(IV)

(c) (A)-(IV), (B)-(V), (C)-(I), (D)-(II), (E)-(III)

(d) (A)-(I), (B)-(II), (C)-(III), (D)-(IV), (E)-(V)

Answer Key:

(1)-(d); (2)-(a); (3)-(d); (4)-(d); (5)-(b); (6)-(b); (7)-(b); (8)-(c); (9)-(b); (10)-(c)