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In earthworm fertilisation occurs in

A. oviduct

B. water

C. cocoon

D. ootheca

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  1. In the blood vascular system of earthworm there are four pairs of hearts present in the first 13 segments.…
  2. Totally marine annelids belong to the
  3. The excretory organs of earthworm are
  4. The nitrogenous waste in earthworm consist of about
  5. Pheretima is
  6. A chitinous lining in earthworm is found in
  7. In earthworm, the genital papillae are situated ventrally on segments
  8. Earthworm has no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic…
  9. In earthworm, the first segment in which mouth is situated is known as
  10. In earthworm, the nephridia without neprostomes are
  11. The septal and pharyngeal nephridia open into the alimentary canal and are of enteronephric type. It…
  12. The coelomic fluid in earthworm escapes through
  13. In earthworm fertilisation occurs in
  14. The gizzard of earthworm is an organ of
  15. Earthworms do not have any respiratory organs because
  16. Copulation occurs between two earthworms
  17. The direction of blood flow in the dorsal vessel of earthworm is
  18. Role of typhlosole in the intestine of earthworm is
  19. Chromophil cells in earthworm are concerned with the secretion of
  20. Locomotion in Earthworm is directly facilitated by
  21. Blood glands in Earthworm are associated with
  22. The enteronephric nephridia in earthworm are
  23. Metamerism is present in
  24. In earthworm, the circular muscles are highly developed in
  25. Which region in earthworm is the forest of nephridia ?
  26. In earthworm, the septal nephridia put their excretory discharge into
  27. Haemoglobin is dissolved in plasma is
  28. Annelids show advancement over the nematoda in having
  29. Earthworm is useful because it
  30. Sperma thecae in earthworm are meant few