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Write the general characters of the phyl...

Write the general characters of the phylum annelida.

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1.They are aquatic or terrestrials, free living or parasitic.
2. They are triploblastic, bilaterally symmetrical, schizocoelomates with organ system level of organisation.
3. The body is metamerically segmented.
4. Longitudinal and circular muscles help in locomotion.
5. Closed type of circulation is seen.
6. Respiratory pigments are present.
7. Sexual reproduction is seen. Development is direct or indirect with a trochophore larva e.g., earthworm.
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