Plankton

Question

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	Hundreds of cells
	A few dozen cells
	Millions of cells
	Thousands of cells

Question

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	zooplankton
	algae
	prokaryotes
	the ocean

Question

Zooplankton are tiny animals.

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	True
	False

Question

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	To attract a mate
	To see in the dark
	To scare away predators
	Just for fun

Question

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	it makes the water saltier.
	it kills large predators like sharks.
	it makes the water more acidic.

Question

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	microscopic
	aquatic (water-living)
	plants
	drifting or wandering

Question

All plankton are microscopic (too small to see without a microscope).

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	True
	False

Question

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	prokaryotes
	phytoplankton
	eukaryotes
	zooplankton