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Tracheae of cockroach and mammal are similar in having

A. paired nature.

B. non-collapsible walls.

C. ciliated inner lining.

D. origin from head.

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

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  1. Identify the figure with its correct name and phylum. 
  2. Which of the following is a chordate feature and not shared by the non-chordates ?
  3. Refer the given figures A, B, C and D and identify the option which shows their correct name. 
  4. Column-I contains organisms and column-II contains their exeretory structures. Choose the correct match…
  5. Refer the types of cells present in some animals. Each cell is specialized to perform a single specific…
  6. Which of the following statements (i v) are incorrect?(i) Parapodia are lateral appendages in arthropods…
  7. Which of the following phylum is being described by the given statements?(i) These are primitive multicellular…
  8. The given figures of animals (A & B) are distinguished on the basis of symmetry. Select the correct…
  9. Which of the following feature in birds indicates their reptilian ancestory ?
  10. Which of the following is a fresh water sponge?
  11. Which of the following group of animals belongs to the same phylum?
  12. Which of the following pairs of animals are similar to each other pertaining to the feature stated against…
  13. The given figures (A & B) shows the germinal layer. The animals having structures shown in the figures…
  14. In phylum echinodermata, the adult echinoderms are ______A__________ but larvae are _______B______ .
  15. Identify the figures A, B and C and choose the correct option. 
  16. Which one of the following groups of animals is correctly matched with its characteristic feature without…
  17. A student was given a specimen to identify on the basis of the characteristics given below.(i) They…
  18. Aquatic annelids (like Nereis) possess lateral appendages called ______________, which help in swimming.
  19. Which of the following traits is not shared by both sea anemones and jellyfish ?
  20. __________ is responsible for maintaining the current of water in sponge.
  21. The following statement are associated with the occurrence of notochord. Identify the incorrect statement.
  22. Column I contains zoological names of animals and column II contains their common name. Match the following…
  23. The organisms attached to the substratum generally possess
  24. Which of the following statement is incorrect?
  25. Which of the following character is absent in all chordates?
  26. Match the characteristic feature/terms given in column I with the phylum to which they belongs given…
  27. A common characteristic of all vertebrates without exception is
  28. Match the types of animals given in column I with their examples given in column II and choose the correct…
  29. Which of the follwoing statement(s) is/are correct?(i) Organ systems in different group of animals show…
  30. Which of the following is not a characteristic of phylum echinodermata ?