Why does fruit biodegrade?

Answer 1

Biodegradability refers to an object's susceptibility to being broken down and recycled by living organisms, mostly microorganisms. Fruit, because of its high nutrient content and its sometimes express purpose to be eaten by other organisms, makes it prime targets for consumption and digestion by other organisms. Most organisms also have the necessary enzymes to metabolism the relatively simple nutrients in fruit. In comparison, plastic is not nutritious to most organisms, it is normally not an intended target for ingestion, and for those unfortunate enough to ingest it, the necessary enzymes are not present in nature to break it down.

Answer 2

Fruit biodegrades due to the activity of microorganisms like fungi and bacteria breaking down its organic matter into simpler substances. Enzymes released during this process help to decompose the fruit and return its nutrients back to the soil.