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Annelids show advancement over the nematoda in having

A. metameric segmentation

B. true coelom

C. closed circulatory system

D. all of these

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  1. Earthworm is useful because it
  2. In earthworm testes are situated in the
  3. Which region in earthworm is the forest of nephridia ?
  4. The enteronephric nephridia in earthworm are
  5. The cliteilum singulum in earthworm is formed by
  6. The female genital aperture in earthworm is present ventrally on segment
  7. Earthworms do not have any respiratory organs because
  8. The gizzard of earthworm is an organ of
  9. The fertilization in earthworms occurs in
  10. Nereis is commonly called
  11. Chromophil cells in earthworm are concerned with the secretion of
  12. The coelomic fluid in earthworm escapes through
  13. The terminal nephridial ducts of the septal nephridia of Pheretima open into
  14. Totally marine annelids belong to the
  15. Nephrostomes are found in
  16. Chloragogen cells of Pheretima play a role very much like that of
  17. Anticoagulant secreted by leech is
  18. In Pheretima, the blood glands are located
  19. In earthworm fertilisation occurs in
  20. In earthworm, the first segment in which mouth is situated is known as
  21. A skeleton like function during locomotion of Pheretima is performed by
  22. The dorsal blood vessel in earthworm is
  23. In earthworm, the genital papillae are situated ventrally on segments
  24. Earthworm has no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic…
  25. Annelids show advancement over the nematoda in having
  26. Structure typically represented in every segment of earthworm is
  27. In earthworm, the septal nephridia put their excretory discharge into
  28. Copulation occurs between two earthworms
  29. Blood glands in Earthworm are associated with
  30. Locomotion in Earthworm is directly facilitated by