Review the image(s) and answer the following questions.

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1			What is the first group to show bilateral symmetry?
			A)	sponges
			B)	cnidarians and ctenophorans
			C)	flatworms
			D)	roundworms
2			In what group did jointed appendages arise?
			A)	annelids
			B)	arthropods
			C)	mollusks
			D)	nematodes

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3			What major digestive innovation arises in the cnidarians?
			A)	a complete digestive tract
			B)	extracellular digestion of food
			C)	intracellular digestion of food
			D)	hunting prey items
4			What sort of symmetry is seen for the first time in the cnidarians?
			A)	radial symmetry
			B)	bilateral symmetry
			C)	ipsilateral symmetry
			D)	contralateral symmetry