Choose the correct statement.

  • Option 1)

    All mammals are viviparous.

  • Option 2)

    All cyclostomes do not possess jaws and paired fins.

  • Option 3)

    All reptiles have a three-chambered heart.

  • Option 4)

    All Pisces have gills covered by an operculum.

 

Answers (1)

None

 

Class Cyclostomata -

All are ectoparasites on some fishes. Mouth is circular and jawless. Head and brain poorly developed.

- wherein

Eg. Petromyzon, Myxine.

 

 


Option 1)

All mammals are viviparous.

This is incorrect option

Option 2)

All cyclostomes do not possess jaws and paired fins.

This is correct option

Option 3)

All reptiles have a three-chambered heart.

This is incorrect option

Option 4)

All Pisces have gills covered by an operculum.

This is incorrect option

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