Earthworm has no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton due to

A. setae

B. circular muscles

C. coelomic fluid

D. longitudinal muscles

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  1. In earthworm, the first segment in which mouth is situated is known as
  2. The chloragogen cells of earthworm are analogous to
  3. Spermathecae in earthworm represent
  4. The fertilization in earthworms occurs in
  5. The coelomic fluid in earthworm escapes through
  6. Copulation occurs between two earthworms
  7. Structure typically represented in every segment of earthworm is
  8. Earthworm is useful because it
  9. In earthworm, the nephridia without neprostomes are
  10. Which region in earthworm is the forest of nephridia ?
  11. The septal and pharyngeal nephridia open into the alimentary canal and are of enteronephric type. It…
  12. Metamerism is present in
  13. Annelids show advancement over the nematoda in having
  14. The dorsal blood vessel in earthworm is
  15. In Pheretima, the blood glands are located
  16. The female genital aperture in earthworm is present ventrally on segment
  17. Blood glands in Earthworm are associated with
  18. The coelom in Pherethna is
  19. Earthworm has no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic…
  20. In the blood vascular system of earthworm there are four pairs of hearts present in the first 13 segments.…
  21. Earthworms do not have any respiratory organs because
  22. Nephrostomes are found in
  23. The enteronephric nephridia in earthworm are
  24. A skeleton like function during locomotion of Pheretima is performed by
  25. The gizzard of earthworm is an organ of
  26. Sperma thecae in earthworm are meant few
  27. The nitrogenous waste in earthworm consist of about
  28. Chloragogen cells of Pheretima play a role very much like that of
  29. The direction of blood flow in the dorsal vessel of earthworm is
  30. In earthworm, the circular muscles are highly developed in