Classification of Animals
Question
Longitudinal and circular muscles in the body wall help for locomotion in
Moderate
Solution
Annelids possess longitudinal and circular muscles in their body wall, which help in locomotion.
Cnidarians (e.g., jellyfish) lack muscles (they lack mesoderm).
In Aschelminthes (e.g., hookworm), only longitudinal muscles are present in the body wall.
The body wall of cockroach lacks muscles.
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