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Polyp phase is absent in

A. Hydra

B. Aurelia

C. Physalia

D. Obelia

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  1. Identify the correct characteristics of porifera. Commonly known as sea walnuts.Presence of ostia and…
  2. Which of the following belong to phylum arthropoda?
  3. The given figure shows some characteristic features marked as chordates. Identify the correct labelling…
  4. Match the phylum given in column - I with the special features present in them given in column - II…
  5. Column-I contains organisms and column-II contains their exeretory structures. Choose the correct match…
  6. Which of the following characteristic distinguish arthropoda from annelids and molluscs ?
  7. The given figures of animals (A & B) are distinguished on the basis of symmetry. Select the correct…
  8. Which of the following is not a characteristic feature of kingdom animalia ?
  9. Which of the following is a fresh water sponge?
  10. In ctenophora, the body bears _______ external rows of ciliated comb plates, which help in locomotion.
  11. Which of the following possesses poison sting and belongs to class chondrichthyes?
  12. Tracheae of cockroach and mammal are similar in having
  13. In which of the phylum, excretory organ like proboscis gland is present?
  14. Hemichordates have now been placed with the nonchordates, close to echinoderms, because true
  15. Column I contains zoological names of animals and column II contains their common name. Match the following…
  16. Identify the figures and select the correct option 
  17. Which of the follwoing statement(s) is/are correct?(i) Organ systems in different group of animals show…
  18. The organisms attached to the substratum generally possess
  19. Which of the following is a correct match of a phylum with their three examples?
  20. __________ is responsible for maintaining the current of water in sponge.
  21. Read the following statements and answer the question.(i) They are exclusively marine, radially symmetrical,…
  22. Identify the figure with its correct name and phylum. 
  23. Heart is three - chambered in reptiles, except
  24. In amphibians, respiration occurs through
  25. Which of the following statements (i – v) are incorrect ? Circulatory system in arthropods is…
  26. Which of the following character is absent in all chordates?
  27. Which of the following statement(s) is/are correct for class amphibia?(i) Body is divisible into head…
  28. Which of the following is a poisonous snake?
  29. A student brought home a strange animal which he found outside under a rock. It had moist skin, a complete…
  30. Polyp phase is absent in