Plankton

Question 1

Your answer	Choice	Feedback	Correct answer
	Millions of cells
	Hundreds of cells
	Thousands of cells
	A few dozen cells

Question 2

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	eukaryotes
	phytoplankton
	zooplankton
	prokaryotes

Question 3

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

Question 4

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

Question 5

Zooplankton are tiny animals.

Your answer	Choice	Feedback	Correct answer
	True
	False

Question 6

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	prokaryotes
	algae
	zooplankton
	the ocean

Question 7

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	plants
	drifting or wandering
	aquatic (water-living)
	microscopic

Question 8

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

Your answer	Choice	Feedback	Correct answer
	True
	False