Which of the following character is absent in all chordates?

A. Diaphragm

B. Coelom

C. Pharyngeal gill clefts

D. Dorsal nerve cord

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

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  1. A file like rasping organ for feeding, called radula, present in the phylum __________.
  2. Which of the following animals are bilaterally symmetrical?
  3. Which of the following feature in birds indicates their reptilian ancestory ?
  4. Identify the animals shown in the given figures A, B and C from options given below. 
  5. Which of the following feature is not correct regarding the figure given below? 
  6. Which of the following statement(s) is/are correct for class amphibia?(i) Body is divisible into head…
  7. Which of the following is a fresh water sponge?
  8. __________ is responsible for maintaining the current of water in sponge.
  9. Identify the correct characteristic feature shown by the given figure? 
  10. Which of the following characteristic is probably most responsible for the great diversification of…
  11. Which of the following characteristics is correct for reptilia?
  12. The organisms attached to the substratum generally possess
  13. Which of the following belong to phylum arthropoda?
  14. Which of the following animal contains respiratory organs like, gills, book gills, book lungs or tracheal…
  15. The figure given below is the characteristic structure of the phylum in which animals are aquatic, free…
  16. Which of the following statement(s) is/are correct regarding phylum aschelminthes?(i) The body is circular…
  17. Identify the figure with its correct name and phylum. 
  18. Refer the types of cells present in some animals. Each cell is specialized to perform a single specific…
  19. Which of the following possesses poison sting and belongs to class chondrichthyes?
  20. Which of the following statements is incorrect ?
  21. Aquatic annelids (like Nereis) possess lateral appendages called ______________, which help in swimming.
  22. When any plane passing through the central axis of the body divides the organism into two identical…
  23. Which of the following is not a chordate character?
  24. The given figure shows some characteristic features marked as chordates. Identify the correct labelling…
  25. Match the characteristic feature/terms given in column I with the phylum to which they belongs given…
  26. The figure given below shows the germinal layers marked as A, B, C and D. Identify the label showing…
  27. Which of the following sets of animals give birth to young ones?
  28. Which of the following phylum is being described by the given statements?(i) These are primitive multicellular…
  29. In ctenophora, the body bears _______ external rows of ciliated comb plates, which help in locomotion.
  30. Flame cells present in platyhelminthes, are specialized in