Question

A piece of bread is moistened and placed in warm place for two-three days with Observations and Reason​

Answer 1

If you place a moistened piece of bread in warm place for several days, you will observe that a black powder looking growth appears on the surface of bread. This black powder is called bread mold.

Bread mold is the most commonly known mold that grows on bread, pickles, fruits etc. A wet piece of bread is a hot bed for the bread mould to grow.

In few days, you will observe that the whole surface of bread will be covered with it and looks black in color.