Ans 1: (Master Answer)
D
According to the given table, P is a sense organ with bones and muscles. It cannot be eye, as eye does not have bones. Q is a sense organ having muscles but no bones. It cannot be nose as nose has bones.R and S are not sense organs. They can be any other organ. R has both bones and muscles, so it cannot be heart, as heart does not have bones. S has muscles but no bones, so it can be small intestine which absorbs digested food and passes it into blood.