Body Fluids and CirculationHard
Question
Which one of the following categories of animals, is correctly described with no single exceptionin it ?
Options
A.All mammals are viviparous and possess diaphragm for breathing
B.All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal)
C.All bony fishes have four pairs of gills and an operculum on each side
D.All sponges are marine and have collared cells