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Hemichordates have now been placed with the nonchordates, close to echinoderms, because true

A. notochord is absent.

B. pharyngeal gill-slits are lacking.

C. dorsal nerve cord is absent.

D. heart is lacking.

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. Which of the following is not a characteristic of phylum echinodermata ?
  2. Which of the following is not the common fundamental feature for animal classification?
  3. Which of the following is a fresh water sponge?
  4. Which of the following class is being correctly described by given statements (i - iv)?(i) All living…
  5. Flame cells present in platyhelminthes, are specialized in
  6. Match the phylum given in column - I with their example given in column - II and choose the correct…
  7. Which of the following statement(s) is/are correct regarding phylum mollusca?
  8. Column I contains zoological names of animals and column II contains their common name. Match the following…
  9. Which of the following characteristic is probably most responsible for the great diversification of…
  10. Which of the following phylum is being described by the given statements?(i) They are bilaterally symmetrical,triploblastic,…
  11. The following statement are associated with the occurrence of notochord. Identify the incorrect statement.
  12. Identify the correct characteristic feature shown by the given figure? 
  13. Refer the following statement and answer the question. 'Name of X is derived from stinging capsules.…
  14. Which of the following statement(s) is/are correct regarding phylum aschelminthes?(i) The body is circular…
  15. A file like rasping organ for feeding, called radula, present in the phylum __________.
  16. Which of the following feature is not correct regarding the figure given below? 
  17. Which of the following statements (i - v) are correct ?(i) The pelvic fins of female sharks bear claspers.(ii)…
  18. Which of the following statement(s) is/are correct regarding phylum coelenterata?(i) They are aquatic,…
  19. Which of the following group of animals belongs to the same phylum?
  20. Which of the following characteristics is correct for reptilia?
  21. Which of the following pairs of animals comprises jawless fishes?
  22. A student was given a specimen to identify on the basis of the characteristics given below.(i) They…
  23. Which of the following statement(s) is/are correct regarding class aves?(i) The forelimbs are modified…
  24. Which of the following animal contains respiratory organs like, gills, book gills, book lungs or tracheal…
  25. Which of the following is an incorrect statement regarding flatworms ?
  26. Meandrina (brain coral) belongs to phylum
  27. The given figures (A & B) shows the germinal layer. The animals having structures shown in the figures…
  28. Which of the following sets of animals give birth to young ones?
  29. __________ is responsible for maintaining the current of water in sponge.
  30. Which of the following feature in birds indicates their reptilian ancestory ?