Which one of the following statements is not correct?

  • A
    All echinoderms are viviparous
  • B
    Roundworm has no circulatory system
  • C
    In bony fishes,swim bladder is usually present
  • D
    In cartilaginous fishes,fertilization is internal

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Similar Questions

Give the characteristic features of the following,citing one example of each:
$(a)$ Chondrichthyes and Osteichthyes
$(b)$ Urochordata and Cephalochordata

Consider the following set of animals and choose the best option for the set of animals not belonging to the same class:

Animals exhibiting radial symmetry are found in:

The only incorrectly matched pair is

Select the correct pair.

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