Choose the correct statement.

MCQ

A
All mammals are viviparous.
✓
All cyclostomes do not possess jaws and paired fins.
C
All reptiles have a threechambered heart.
D
All pisces have gills covered by an operculum.

✓

Answer

Correct option: B.

All cyclostomes do not possess jaws and paired fins.

b
(b) : Ornithorhynchus and Tachyglossus are oviparous mammals. Crocodile is a reptile which possesses four chambered heart. In cartilaginous fish (except Chimaera) gills are not covered by an oper culum.

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