SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Coral
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Sponges
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Anemones
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Barnacles
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Detailed explanation-1: -Barnacles are a type of arthropod constituting the subclass Cirripedia in the subphylum Crustacea, and are hence related to crabs and lobsters. Barnacles are exclusively marine, and tend to live in shallow and tidal waters, typically in erosive settings.
Detailed explanation-2: -Barnacles are unusual among crustaceans in being sessile, with her-maphroditism the norm, unlike most Crustacea (Darwin 1852, 1854; Charnov 1987).
Detailed explanation-3: -Acorn barnacles, also called rock barnacles, are sessile (not stalked); their symmetrical shells tend to be barrellike or broadly conical.
Detailed explanation-4: -Because barnacles are sessile animals, they have no need for the walking legs that many of their crustacean relatives possess.