Metamerism is found in:
Correct answer: A. Earth worm
- A. Earth worm
- B. Sponges
- C. Snakes
- D. Grass Hopper
Explanation
Metamerism is the repetition of homologous body segments. This type of development can be seen in the Annelids, which include earthworms, leeches, tubeworms, and their relatives. It is also seen in a more advanced form in the Arthropods, such as crustaceans, insects.Earthworms exhibit metamerism with distinct segments along their body, allowing for efficient movement and specialized functions in each segment. Sponges, snakes, and grasshoppers do not exhibit metamerism, making them incorrect choices for this question.
This question appeared on the ETEA MDCAT 2009 paper, which you can sit online with every answer explained.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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