In earthworm, the circular muscles are highly developed in

A. body wall

B. gizzard

C. typholsole

D. pharynx

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  1. A skeleton like function during locomotion of Pheretima is performed by
  2. Earthworm has no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic…
  3. The dorsal blood vessel in earthworm is
  4. Locomotion in Earthworm is directly facilitated by
  5. Blood glands in Earthworm are associated with
  6. Earthworm is useful because it
  7. The enteronephric nephridia in earthworm are
  8. In earthworm, the septal nephridia put their excretory discharge into
  9. Sperma thecae in earthworm are meant few
  10. Which of the following statements is correct ?
  11. The gizzard of earthworm is an organ of
  12. Which region in earthworm is the forest of nephridia ?
  13. The nitrogenous waste in earthworm consist of about
  14. 5. The pre-typhlosolar region in Pheretima extends from
  15. Role of typhlosole in the intestine of earthworm is
  16. The chloragogen cells of earthworm are analogous to
  17. The excretory organs of earthworm are
  18. Nereis is commonly called
  19. The number of segments in leech is
  20. The fertilization in earthworms occurs in
  21. Nephrostomes are found in
  22. In earthworm, the genital papillae are situated ventrally on segments
  23. The female genital aperture in earthworm is present ventrally on segment
  24. Annelids show advancement over the nematoda in having
  25. In earthworm, the first segment in which mouth is situated is known as
  26. A chitinous lining in earthworm is found in
  27. The coelomic fluid in earthworm escapes through
  28. The cliteilum singulum in earthworm is formed by
  29. The septal and pharyngeal nephridia open into the alimentary canal and are of enteronephric type. It…
  30. Chloragogen cells of Pheretima play a role very much like that of