Protozon
Which of the following is not true of protozoa?

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

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

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

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