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Protozon MCQ Questions & Answers

Protozon MCQs : This section focuses on the "Protozon". These Multiple Choice Questions (MCQs) should be practiced to improve the Protozon skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.




Question 1

Which of the following is least likely to get in or on a protozoan such as a diplomonad or trichomonad?

A. Flagella
B. More than one nucleus
C. Genes to produce a cyst form
D. Rigid polysaccharide cell wall

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Question 2

Organisms which have spore-forming stage in their life cycle and lack special locomotory organelles belong to which phylum of Protozoa?

A. Microspora
B. Myxozoa
C. Ciliophora
D. Apicomplexa

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Question 3

A protozoan is defined as

A. motile prokaryotic unicellular protist
B. motile eukaryotic unicellular protist
C. motile eukaryotic unicellular photosynthetic protist
D. motile eukaryotic multicellular protist

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Question 4

Which of the following is not a function of cysts for Protozoa?

A. Protect against adverse environments
B. Sites for nuclear reorganization and cell division
C. Serve as a means of transfer between hosts in parasitic species
D. All of the above

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Question 5

Members of the Protozoa may motile by all of the following methods except

A. flagella
B. gliding by slime secretion
C. cilia
D. pseudopodia

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Question 6

Members of which phylum of Protozoa are being considered as biological control agents for certain insects?

A. Microspora
B. Sarcomastigophora
C. Apicomplexa
D. All of the above

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Question 7

Organisms are parasitic and have a resistant spore with one to six coiled polar filaments belong to which phylum of Protozoa?

A. Labyinthomorpha
B. Sarcomastigophora
C. Apicomplexa
D. Myxozoa

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Question 8

Protozoa are generally not

A. multicellular
B. microscopic
C. lacking cell walls
D. eukaryotic

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Question 9

The numbers of nuclear divisions involved in a ciliate undergoing binary fission is

A. greater than conjugation
B. lesser than conjugation
C. equal to conjugation
D. None of these

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Question 10

Which of the following describes the function of a phagocytic vacuole?

A. Contain specific enzymes that perform various functions
B. Maintain osmotic balance by continuous water expulsion
C. Structures that accept male gametes during sexual reproduction
D. Sites of food digestion

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Question 11

Protozoa have several types of vacuoles.The function of a contractile vacuole is to

A. maintain osmotic balance by continuous water expulsion
B. creates sites of food digestion
C. contain specific enzymes that perform various functions
D. have sites for photosynthesis

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Question 12

Which of the following describes the function of a secretory vacuole?

A. Sites of food digestion
B. Maintain osmotic balance by continuous water expulsion
C. Contain specific enzymes that perform various functions
D. Structures that accept male gametes during sexual reproduction

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Question 13

Most commonly asexual reproduction in the Protozoa is by

A. conjugation
B. gametangial contact
C. binary fission
D. binary fusion

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Question 14

Which of the following is not true of protozoa?

A. Lack cell wall
B. Produce no sporebearing structures
C. Comprise the microbial population known as phytoplankton
D. Form active feeding forms called trophozoites

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Question 15

Members of which phylum of Protozoa are being considered as biological control agents for certain insects?

A. Microspora
B. Sarcomastigophora
C. Apicomplexa
D. all of these

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Question 16

Saprozoic nutrition is characterized by

A. phagocytosis of solid nutrients and subsequent formation of phagocytic vacuoles
B. pinocytosis of solid nutrients and subsequent formation of phagocytic vacuoles
C. encystment of solid nutrients and subsequent formation of secretory vacuoles
D. pinocytosis of soluble nutrients and subsequent formation of phagocytic vacuoles

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Question 17

Organisms with complex life cycles which include a mammalian host and an insect host and involves schizogony as part of the cycle belong to which phylum of Protozoa?

A. Sarcomastigophora
B. Microspora
C. Apicomplexa
D. Myxozoa

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Question 18

Number of motility structures on flagellated cells is

A. greater than ciliated cells
B. lesser than ciliated cells
C. equal to ciliated cells
D. None of these

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Question 19

Which of the following is least likely to have a rigid cell wall?

A. Bacterium
B. Archaean
C. Fungus
D. Protozoan

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Question 20

Organisms with amoeboid cells that move within a network of mucous tracks using a typical gliding motion belong to which phylum of Protozoa?

A. Labyinthomorpha
B. Microspora
C. Apicomplexa
D. Myxozoa

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Question 21

Holozoic nutrition is characterized by

A. phagocytosis of solid nutrients and subsequent formation of phagocytic vacuoles
B. pinocytosis of solid nutrients and subsequent formation of phagocytic vacuoles
C. phagocytosis of soluble nutrients and subsequent formation of phagocytic vacuoles
D. photosynthesis

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Question 22

Sexual reproduction in the Protozoa occurs most commonly by

A. conjugation
B. gametangial contact
C. binary fission
D. binary fusion

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