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The female genital aperture in earthworm is present ventrally on segment

A. 10th

B. 12th

C. 14th

D. 18th

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  1. The fertilization in earthworms occurs in
  2. In earthworm, the first segment in which mouth is situated is known as
  3. Earthworm is useful because it
  4. Spermathecae in earthworm represent
  5. The cliteilum singulum in earthworm is formed by
  6. In earthworm testes are situated in the
  7. Locomotion in Earthworm is directly facilitated by
  8. In earthworm, the nephridia without neprostomes are
  9. Haemoglobin is dissolved in plasma is
  10. Earthworms do not have any respiratory organs because
  11. Pheretima is
  12. Chromophil cells in earthworm are concerned with the secretion of
  13. The enteronephric nephridia in earthworm are
  14. The gizzard of earthworm is an organ of
  15. The number of segments in leech is
  16. In earthworm, the genital papillae are situated ventrally on segments
  17. The septal and pharyngeal nephridia open into the alimentary canal and are of enteronephric type. It…
  18. A skeleton like function during locomotion of Pheretima is performed by
  19. The nitrogenous waste in earthworm consist of about
  20. The coelomic fluid in earthworm escapes through
  21. The coelom in Pherethna is
  22. Totally marine annelids belong to the
  23. In earthworm, the septal nephridia put their excretory discharge into
  24. Nereis is commonly called
  25. In the blood vascular system of earthworm there are four pairs of hearts present in the first 13 segments.…
  26. Blood glands in Earthworm are associated with
  27. Earthworm has no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic…
  28. In earthworm, the circular muscles are highly developed in
  29. Structure typically represented in every segment of earthworm is
  30. The chloragogen cells of earthworm are analogous to