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B
Arthropoda
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C
Platy helminthes
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D
Both 1 & 2
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Solution
The correct option is A
Annelida
Metamerism is the phenomenon of having a linear series of body segments fundamentally similar in structure. The individual segments are known as metameres. However, not all such structures are entirely alike in any single life form because some of them perform special functions. Annelids such as earthworms are a good example of metamerism. Most animals higher than Annelids in the Animal Kingdom also exhibit metamerism at least during some part of their life history.