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Which one of the following categories of animals is correctly described with no single exception in it?

A. In chondrichthyes notochord is persistent throughout life.

B. All mammals are viviparous and possess diaphragm for breathing.

C. All sponges are marine.

D. All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal).

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  4. Match the terms/feature given in column I with their examples given in column II and select the correct…
  5. Which of the following statement(s) is/are correct?(i) Animals in which the cells are arranged in two…
  6. Refer the types of cells present in some animals. Each cell is specialized to perform a single specific…
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  8. Match the characteristic feature/terms given in column I with the phylum to which they belongs given…
  9. Which of the following characteristics is correct for reptilia?
  10. Refer the given figures A, B, C and D and identify the option which shows their correct name. 
  11. Which of the following statement is incorrect?
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  14. Which of the following is not the common fundamental feature for animal classification?
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  18. Which of the following is a living fossil?
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  20. Which of the following statements (i - v) are correct ?(i) The pelvic fins of female sharks bear claspers.(ii)…
  21. The given figures of animals (A & B) are distinguished on the basis of symmetry. Select the correct…
  22. In amphibians, respiration occurs through
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  25. When any plane passing through the central axis of the body divides the organism into two identical…
  26. Which of the following is an incorrect statement regarding flatworms ?
  27. Animals like annelids, arthropods, etc. where the body can be divided into identical left and right…
  28. Select the incorrect feature of mollusca from the given statements. Terrestrial or aquatic animals having…
  29. Which one of the following groups of animals is correctly matched with its characteristic feature without…
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