The respiratory organs in a sea star are

A. ctenidia

B. dermal branchiae

C. book lungs

D. trachea

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  1. Main difference between starfishes and brittle stars is in the
  2. A very well developed brain is present in
  3. Pentamerous echinoderms with five slender flexible arms sharply marked off from the central disc are
  4. Sea cucumber belongs to class
  5. The larva that occurs in the development of Sea urchin is
  6. Madriporite or seive plate is found in
  7. Stone canal in star fish is associated with
  8. The generic name of 'feather star' is
  9. The Echinoderms are marine animals with
  10. The respiratory organs in a sea star are
  11. Animals which exhibit radial, pen-tamerous symmetry in adults, and bilateral symmetry amongst larvae,…
  12. Which of the following systems is found in Echinoderms ?
  13. Spines of the body of Sea urchin are
  14. Class Holothuroidea of phylum Echinodermat a includes
  15. Which is not true of Echinoderms?
  16. Aristotle's lantern is
  17. Ambulacral system or water vascular system is typically found in
  18. Which one of the following Echinoder-mate is found in fresh water ?
  19. In Sea urchin, Aristotle's lantern is a part of
  20. In star fish which of the following has dual function of locomotion and respiration
  21. One of these is a stalked echinoderm
  22. Animals with radial symmetry in adults and bilateral symmetry in larvae are
  23. Auricuiaria is the larva of
  24. Madreporite is associated with
  25. The locomotor organs of Echinoderms is called
  26. Water vascular system helps in
  27. Brittle star belongs to the class
  28. Bipinnaria larva is found in the development of a
  29. The larva of holothuroide is
  30. In which of the Echinoderm, the arms, spines and pedicellaria are absent ?