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Question

Question 53
You are given leech, Nereis, Scolopendra, prawn and scorpion; and all have segmented body organisation. Will you classify them in one group? If no, give the important characters based on which you will separate these organisms into different groups.

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Solution

  • Leech and Nereis belong to phylum Annelida because they have a metamerically segmented body, that is, the body is divided into many segments internally by septa. Body segments are lined up one after the other from head to tail.
  • But Scolopendra, prawn and scorpion belong to phylum Arthropoda as these have jointed legs and open circulating system.

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