Protozon
Which of the following is not true of protozoa?

Form active feeding forms called trophozoites
Lack cell wall
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
Contain specific enzymes that perform various functions
Sites of food digestion
Maintain osmotic balance by continuous water expulsion

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