The small, peglike projections of the tongue's surface are called

The small, peglike projections of the tongue's surface are called: Papilae
In human's tounge papilae is the organ that make us able to taste everything that we put in our mouth. It consist of five different regions, and each separate regions are capable to give response for 5 unique taste: sweet, sour, bitter, salty, and umami

The name of the instrument that the scientist uses is called a microscope.a microscope is used to view objects which is not visible to the naked eyes