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In earthworm testes are situated in the

A. 10th and 11th segments

B. 11th and 12th segments

C. 14th and 15th segments

D. none of these

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  1. The septal and pharyngeal nephridia open into the alimentary canal and are of enteronephric type. It…
  2. Earthworms do not have any respiratory organs because
  3. The direction of blood flow in the dorsal vessel of earthworm is
  4. Haemoglobin is dissolved in plasma is
  5. Metamerism is present in
  6. Nephrostomes are found in
  7. Earthworm has no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic…
  8. The coelomic fluid in earthworm escapes through
  9. The coelom in Pherethna is
  10. 5. The pre-typhlosolar region in Pheretima extends from
  11. Sperma thecae in earthworm are meant few
  12. Pheretima is
  13. The terminal nephridial ducts of the septal nephridia of Pheretima open into
  14. Earthworm is useful because it
  15. The chloragogen cells of earthworm are analogous to
  16. Which of the following statements is correct ?
  17. The nitrogenous waste in earthworm consist of about
  18. Anticoagulant secreted by leech is
  19. A chitinous lining in earthworm is found in
  20. Chromophil cells in earthworm are concerned with the secretion of
  21. In earthworm, the first segment in which mouth is situated is known as
  22. In earthworm, the septal nephridia put their excretory discharge into
  23. Structure typically represented in every segment of earthworm is
  24. A skeleton like function during locomotion of Pheretima is performed by
  25. In earthworm fertilisation occurs in
  26. Spermathecae in earthworm represent
  27. The fertilization in earthworms occurs in
  28. The female genital aperture in earthworm is present ventrally on segment
  29. The enteronephric nephridia in earthworm are
  30. Copulation occurs between two earthworms