Protozon
Which of the following is not true of protozoa?

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

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

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

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