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

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

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Protozon
A protozoan is defined as

motile eukaryotic multicellular protist
motile eukaryotic unicellular protist
motile eukaryotic unicellular photosynthetic protist
motile prokaryotic unicellular protist

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

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

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