1.

Most fish do not sink in water because of the presence of the (i) swim bladder (ii) air bladder (iii) air sacs (iv) air in spongy bones (a) i and ii are correct (b) ii and iii are correct (c) iii and iv are correct (d) i, ii, iii and iv are correct

Answer»

The correct option is: (a) i and ii are correct



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