1.What is the symmetry of this organism?  (Hint: the shell is from a different organism (a gastropod), but the body of the hermit crab has evolved to fit perfectly inside the coiled shell) Bilateral Radial Asymmetrical Pentameral   2.What is the life style of this organism (hermit crab) in the previous photo? (Select all that apply) Sessile Vagrant Benthic, epifaunal Pelagic, nektonic Benthic, infaunal Pelagic, planktonic

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A: Ammonoidea and Nautiloidea are fossil cephalopods.

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A:

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Classification of Marine Organisms

Classification is a way of categorizing organisms that enables an easy process of identification of such organisms. All living things are classified by grouping them under specific categories. The grouping is done based on the close relativeness of the organisms. The classification tool requires knowledge of characteristics, differences, and similarities between different organisms.