1
Head with big eyes
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Sea urchin belonsg to this group
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They have ten or more legs and are aquatic
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They have spiral shell
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The body is covered by a rigid and articulated exoskeleton
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This animal belongs to annelids
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Their body has one or two pairs of legs in each segment
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It has umbrella shape
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Water with food enters through the pores
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These animals belong to arachnids
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They have a mouth and a central cavity called the gastrovascular cavity
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Gastropods, bivalve and cephalopods belong to this group of invertebrates
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They are the only invertebrates that can fly
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They have two shells called valves
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This one has flat segments
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They have the shape of a bag