1.

Write the general characters of the phylum annelida.

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


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