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The organisms attached to the substratum generally possess

A. one single opening to the digestive canal.

B. cilia on the surface to create water current.

C. radial symmetry.

D. asymmetrical body.

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  1. Which of the following statement(s) is/are correct regarding phylum coelenterata?(i) They are aquatic,…
  2. When any plane passing through the central axis of the body divides the organism into two identical…
  3. Which of the following class is being correctly described by given statements (i - iv)?(i) All living…
  4. The combination of a true coelom and repeating body segmentation allows the annelids (unlike the anatomically…
  5. Which of the following character is absent in all chordates?
  6. Refer the figures A, B, C and D given below. Which of the following options shows the correct name of…
  7. Which of the following class is being described by the given statements (i - iv)?(i) They are found…
  8. Which of the following is a chordate feature and not shared by the non-chordates ?
  9. Which of the following group of animals reproduces only by sexual means?
  10. Aquatic annelids (like Nereis) possess lateral appendages called ______________, which help in swimming.
  11. Which of the following is a living fossil?
  12. Which of the following animal contains respiratory organs like, gills, book gills, book lungs or tracheal…
  13. The organisms attached to the substratum generally possess
  14. Identify the figures and select the correct option 
  15. Identify the figure with its correct name and phylum. 
  16. Which of the following possesses electric organs and belongs to class chondrichthyes?
  17. Which of the following is not the common fundamental feature for animal classification?
  18. Which of the following is not a chordate character?
  19. Which of the following characteristic is probably most responsible for the great diversification of…
  20. Which of the following phylum is being described by the given statements?(i) They are bilaterally symmetrical,triploblastic,…
  21. Which of the following statement(s) is/are correct regarding phylum aschelminthes?(i) The body is circular…
  22. Identify the figure with its correct name and phylum. 
  23. Which one of the following categories of animals is correctly described with no single exception in…
  24. Match the features given in column I with their examples given in column II and choose the correct match…
  25. Which of the following possesses poison sting and belongs to class chondrichthyes?
  26. Flame cells present in platyhelminthes, are specialized in
  27. Which of the following sets of animals give birth to young ones?
  28. Which of the following statement(s) is/are correct for class amphibia?(i) Body is divisible into head…
  29. In amphibians, heart is ________ chambered.
  30. Refer the following statement and answer the question. 'Name of X is derived from stinging capsules.…