The dorsal blood vessel in earthworm is

A. distributive in 1-13 segments

B. collective in 1-13

C. completely distributive

D. completely collective

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. The coelom in Pherethna is
  2. Anticoagulant secreted by leech is
  3. Pheretima is
  4. Blood glands in Earthworm are associated with
  5. The terminal nephridial ducts of the septal nephridia of Pheretima open into
  6. Locomotion in Earthworm is directly facilitated by
  7. Haemoglobin is dissolved in plasma is
  8. A skeleton like function during locomotion of Pheretima is performed by
  9. The enteronephric nephridia in earthworm are
  10. In earthworm, the first segment in which mouth is situated is known as
  11. Chloragogen cells of Pheretima play a role very much like that of
  12. In earthworm testes are situated in the
  13. In the blood vascular system of earthworm there are four pairs of hearts present in the first 13 segments.…
  14. Role of typhlosole in the intestine of earthworm is
  15. In earthworm, the septal nephridia put their excretory discharge into
  16. In earthworm, the circular muscles are highly developed in
  17. Totally marine annelids belong to the
  18. The cliteilum singulum in earthworm is formed by
  19. In earthworm, the genital papillae are situated ventrally on segments
  20. A chitinous lining in earthworm is found in
  21. Sperma thecae in earthworm are meant few
  22. The septal and pharyngeal nephridia open into the alimentary canal and are of enteronephric type. It…
  23. Structure typically represented in every segment of earthworm is
  24. Spermathecae in earthworm represent
  25. Nephrostomes are found in
  26. The chloragogen cells of earthworm are analogous to
  27. Metamerism is present in
  28. In earthworm fertilisation occurs in
  29. The coelomic fluid in earthworm escapes through
  30. Chetae are totally absent in