Explain the process of metamorphosis in housefly by taking help from in the given diagram.

Metamorphosis is the process by which the immature forms develop into an adult. The adult male and female produces gametes which are haploid (n). the gametes then fertilize and form a zygote (2n). After 1-2 days of fertilization, the zygote will develop into a larva which is segmented, have mouth hooks, and actively feed. after the larval stage comes the pupa stage in which the body is enclosed in a puparium (outer hard shell) and is inactive and immature. After the pupa states the adult comes out from the puparium by breaking it.