Home

The following statement are associated with the occurrence of notochord. Identify the incorrect statement.

A. It is present only in larval tail in ascidians.

B. It is replaced by a vertebral column in adult frog.

C. It is absent throughout the life in humans from the very beginning.

D. It is present throughout life in Amphioxus.

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

You can do it
  1. Which of the following possesses poison sting and belongs to class chondrichthyes?
  2. Which of the following statements is incorrect ?
  3. The figure given below is the characteristic structure of the phylum in which animals are aquatic, free…
  4. Refer the figures A, B and C and choose the correct option which shows animals that regulate buoyancy…
  5. Which of the following is not a chordate character?
  6. Which of the following statement(s) is/are correct regarding phylum mollusca?
  7. In amphibians, heart is ________ chambered.
  8. Which of the following statement(s) is/are correct regarding phylum coelenterata?(i) They are aquatic,…
  9. Which of the following features distinguish mammals from other vertebrates ?
  10. Refer the types of cells present in some animals. Each cell is specialized to perform a single specific…
  11. A file like rasping organ for feeding, called radula, present in the phylum __________.
  12. Which of the following characteristics is correct for reptilia?
  13. Which of the following phylum is being described by the given statements?(i) They are bilaterally symmetrical,triploblastic,…
  14. Match the characteristic feature/terms given in column I with the phylum to which they belongs given…
  15. The given figures A, B, C and D are the examples of first true land vertebrates. They are dominant in…
  16. Which of the following is a fresh water sponge?
  17. Which of the following animal's body is covered by calcareous shell and unsegmented with a distinct…
  18. Match the terms/feature given in column I with their examples given in column II and select the correct…
  19. A student brought home a strange animal which he found outside under a rock. It had moist skin, a complete…
  20. Identify the animals shown in the given figures A, B and C from options given below. 
  21. Aquatic annelids (like Nereis) possess lateral appendages called ______________, which help in swimming.
  22. The figure given below shows the germinal layers marked as A, B, C and D. Identify the label showing…
  23. A student was given a specimen to identify on the basis of the characteristics given below.(i) They…
  24. Which of the following feature in birds indicates their reptilian ancestory ?
  25. Which of the following statements (i - v) are correct ?(i) The pelvic fins of female sharks bear claspers.(ii)…
  26. Which of the following statements is without exception in sponges ?
  27. Flame cells present in platyhelminthes, are specialized in
  28. In which of the phylum, excretory organ like proboscis gland is present?
  29. Tracheae of cockroach and mammal are similar in having
  30. Which of the following traits is not shared by both sea anemones and jellyfish ?