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The body wall of Hydra consists of

A. ecotderm and endoderm

B. ectoderm and mesoderm

C. ectoderm, mesoderm and endoderm

D. epidermis, mesoglea and endoderm

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  1. The body wall of Hydra consists of
  2. Rhopalia are the sense organs in medusa belonging to the class
  3. What structures in Hydra functionally correspond to the pseudopodia of Aamoeba ?
  4. Nematocytes are the specialised cells found in the members of the phylum
  5. The number of tentacles in Hydra is
  6. Nutritionally Hydra is
  7. Polymorphic coelentrates are the members of the class
  8. The testes of hydra are located
  9. If a Hydra is cut into two pieces, it is noted that
  10. What is common between Hydra and Obelia ?
  11. Among coelenterates medusoid individuals are absent in members of the class
  12. In Hydra, the gastrodermis is composed of
  13. Ctenophores differ form cnidorians in one important aspect, that is
  14. The nematocysts which are mainly used for defense and offense and which tightly coil around the prey…
  15. The mesoglea in Hydra is traversed by
  16. Hydra responds to a strong mechanical stimulus such as agitating the surface of water by
  17. In jelly fishes, the adult is always
  18. The body of Hydra is
  19. Which of the following tissue is absent in Hydra ?
  20. Hydra respires through
  21. Which one is found in Hydra
  22. Hydra is negatively chemotropic because it
  23. A coelentrate, commonly known as fresh water polyp is
  24. The flagella of food-absorbing cells in hydra aid in
  25. If nematocysts are absent in Hydra, which is affected
  26. The first invertebrates to develop a true nervous system are
  27. Nematocysts of Hydra are important for
  28. Hydra is
  29. Division of labour on morphological basis is well exemplified by
  30. A piece of Hydra will regenerate into a full Hydra if it contains a part of