Protozon
Which of the following is not true of protozoa?

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

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

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

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