In earthworm, the circular muscles are highly developed in

A. body wall

B. gizzard

C. typholsole

D. pharynx

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  1. Which region in earthworm is the forest of nephridia ?
  2. In earthworm, the nephridia without neprostomes are
  3. A chitinous lining in earthworm is found in
  4. Pheretima is
  5. Nereis is commonly called
  6. 5. The pre-typhlosolar region in Pheretima extends from
  7. Blood glands in Earthworm are associated with
  8. The excretory organs of earthworm are
  9. In earthworm, the genital papillae are situated ventrally on segments
  10. Chromophil cells in earthworm are concerned with the secretion of
  11. The enteronephric nephridia in earthworm are
  12. Structure typically represented in every segment of earthworm is
  13. A skeleton like function during locomotion of Pheretima is performed by
  14. The female genital aperture in earthworm is present ventrally on segment
  15. In earthworm, the first segment in which mouth is situated is known as
  16. Earthworm has no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic…
  17. In earthworm, the septal nephridia put their excretory discharge into
  18. Nephrostomes are found in
  19. The direction of blood flow in the dorsal vessel of earthworm is
  20. Earthworm is useful because it
  21. Chloragogen cells of Pheretima play a role very much like that of
  22. Anticoagulant secreted by leech is
  23. Haemoglobin is dissolved in plasma is
  24. Which of the following statements is correct ?
  25. The cliteilum singulum in earthworm is formed by
  26. Annelids show advancement over the nematoda in having
  27. The dorsal blood vessel in earthworm is
  28. The fertilization in earthworms occurs in
  29. The chloragogen cells of earthworm are analogous to
  30. The nitrogenous waste in earthworm consist of about