Match the organisms with their descriptions. ___ echinoderms      a. stinging cells in tentacles ___ sponges              b. simplest organ systems ___ cnidarians            c. no tissues, filters out food ___ flatworms            d. jointed exoskeleton ___ roundworms        e. mantle over body mass ___ annelids               f. segmented worms ___ arthropods           g. spiny skinned deuterostomes ___ mollusks               h. complete gut, pseudocoelom

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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.