Which of the following types of organisms will include an invertebrate found in a freshwater setting and showing three developmental body layers and a cuticle covering its outer body?
A
Hydra
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B
Leeches
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C
Sea stars
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D
Sponges
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E
Crustaceans
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Solution
The correct option is E Crustaceans Crustaceans are arthropods. They are commonly found in both marine and freshwater settings. They are triploblastic animals, that is, have three body layers. Their cephalothorax is covered by a carapace. It is protective in nature. They also have an outer covering of cuticle which forms their exoskeleton.