15. 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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16.  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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17. 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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18.  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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19. Protozoa are generally not
A.multicellular
B.microscopic
C.lacking cell walls
D.eukaryotic

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20. 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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21. 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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