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A very well developed brain is present in

A. Starfish

B. Jellyfish

C. Cuttlefish

D. Fresh water mussel

Correct Answer : C.


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  1. Aristotle's lantern is
  2. Pentamerous echinoderms with five slender flexible arms sharply marked off from the central disc are
  3. Which of the following is a living fossil ?
  4. Auricuiaria is the larva of
  5. The respiratory organs in a sea star are
  6. The larva that occurs in the development of Sea urchin is
  7. Madreporite is associated with
  8. The star fish's pyloric caeca are organs of
  9. The generic name of 'feather star' is
  10. Brittle star belongs to the class
  11. The common name of Antedon is
  12. A very well developed brain is present in
  13. In star fish the locomotary organs are
  14. Water vascular system is found in
  15. Animals which exhibit radial, pen-tamerous symmetry in adults, and bilateral symmetry amongst larvae,…
  16. The animal that moves with tube feet is
  17. In star fish which of the following has dual function of locomotion and respiration
  18. Ambulacral system or water vascular system is typically found in
  19. Main difference between starfishes and brittle stars is in the
  20. Class Holothuroidea of phylum Echinodermat a includes
  21. The larvae of sea stars are
  22. Star fishes are
  23. Aristotle's Lantern is present in
  24. Sea cucumber belongs to the class
  25. Madriporite or seive plate is found in
  26. The Echinoderms are marine animals with
  27. Water vascular system helps in
  28. Stone canal in star fish is associated with
  29. Pedicellariae are modified
  30. Which one of these is an Echinoderm ?