Which one of the following categories of animals, is correctly described with no single exception in it? (a) All sponges are marine and have collared cells. (b) All mammals are viviparous and possess diaphragm for breathing. (c) All bony fishes have four pairs of gills and an operculum on each side. (d) All reptiles possess scales, have a three chambered heart and are cold blooded (poikilotherm

Answers (2)

@SUNIL

yes, you are right. That's why it is not a correct option na, except the option of bony fish.... all three statemnts are wrong.

 

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