Microbiology: A Systems Approach
Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 5, Problem 1MCQ

Both flagella and cilia are found primarily in

  1. a. algae.
  2. b. protozoa.
  3. c. fungi.
  4. d. both b and c.
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Summary Introduction

Introduction:

Flagella are a whip-like construction that helps in the movement of bacteria. Their main purpose is to make bacteria swim over fluid. It is like a rotator device which makes revolution per second like in Trypanosoma. Cilia are a tiny hair-like structure that is present on the surface of the cell. Cilia help in the movement of the cell.

Answer to Problem 1MCQ

Correct answer:

Both flagella and cilia are found primarily in protozoa. Therefore, option (b) is correct.

Option (b) is given as “protozoa”.

Explanation of Solution

Justify the reasons for the correct statement:

The protozoan is the term given to single-celled eukaryotes. So, in this group, all the organisms are clustered who have flagella and cilia. In the group of protozoa, amoeba and euglena are included.

Hence, option (b) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “algae”.

Algae are simple eukaryotic organisms that possess chlorophyll that act as a primary photosynthetic pigment which lacks a sterile covering of cells around the reproductive cells. Hence, it is a wrong answer.

Option (c) is given as “fungi”.

Fungi are the member of a eukaryotic organism that can digest food from outside and absorb the nutrients through their cell wall. Hence, it is a wrong answer.

Option (d) is given as “both band c”.

Protozoa have both flagella and cilia but fungi did not have either flagella or cilia. Hence, it is a wrong answer.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

The protozoan is the group of organisms that have both flagella and cilia. Protozoan includes all the unicellular eukaryotes.

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Microbiology: A Systems Approach

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