Page 29 - Genius Kidz Prudence Learning Sc-8

EXERCISE
EXERCISE

1. Multiple choice questions.
(a) Microbiologist is a person who studies :
(i) Biotechnology (ii) Microbiology (iii) Histology (iv) Haematology
(b) Microbes are present in :

(i) Air (ii) Water (iii) Land (iv) Omnipresent
(c) Hard outer coating of microbes is called :
(i) Cyst (ii) Spore (iii) Sperm (iv) Ovum
(d) Coccus implies:

(i) Spherical shape (ii) Rod shape (iii) Spiral shape (iv) None of these
2. Fill up the blanks.
(a) AIDS is __________________________________.

(b) Fungi range in between ______________ mm.
(c) Nutrition in fungi may be _________________ or _______________ .
3. Match the columns.

Column A Column B
(a) AIDS (i) 1928
(b) Bacterial locomotion (ii) Mycobacterium tuberculosis

(c) Pasteurization (iii) Flagella
(d) Tuberculosis (iv) Food preservation
(e) First antibiotic (v) HIV
4. Mark the statements as True /False .

(a) Pseudomonas is an example of protozoan.
(b) Spore formation is a characteristic feature of protozoan.
(c) Psychology is the study of fungus.
5. Very short answer type questions.

(a) Give two examples of algae.
(b) Label the different structural components of a bacterium.
(c) What is meant by Gram negative and Gram positive bacteria?
6. Short answer type questions.

(a) Describe “Algae”
(b) Describe “Protozoa”
(c) What do you mean by pasteurization and sterilization. Give examples of foods on which these
processes are applied.

7. Long answer type questions.
(a) Discuss microbes and their features.
(b) Discuss food preservation.
(c) Elaborate the role of bacteria as friend.

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