Focus on this artwork and analyze the Still life.
Caravaggio has justly been credited as the father of Roman still-life painting, a genre which was in its infancy in the early 17th century.  Although Caravaggio very frequently included still-life elements in his works, only two independent still lifes from his hand have been identified to date. These are the Still Life with Fruit on a Stone Ledge and the Basket of Fruit at the Ambrosiana in Milan. Because of both the extraordinary virtuosity of its execution and the complexity of meaning suggested by its composition, scholars have referred to the Still Life with Fruit on a Stone Ledge as a "capital picture for the artist" and a "masterpiece of still life."
While at one level the painting is a bravura study of texture and form and light, the Renaissance symbology of fruit and vegetables was rich and intricate, and given this fact and the fact that so many of Caravaggio's apparently simple paintings, such as Boy Bitten by a Lizard, in fact carry coded messages, it is not unlikely that the Still Life with Fruit on a Stone Ledge is equally complex. Nevertheless, no plausible reading has so far been advanced, although several commentators have noted the visual suggestiveness of the moistly cut fruits and melons and the writhing, thrusting marrows.
Boy Bitten by a Lizard Renaissance Caravaggio