Growth of thread like structures along with the gradual spoilage of tomato can be observed when a cut tomato is kept aside for four days. Interpret the causes for this change.

Explanation

The thread like structures that grow on the tomato are hyphae of Rhizopus (Bread mould)
They have rod like structures called sporangia.
Sporangia contain spores, they are reproductive structures.
When spores come into contact with moist surface, they begain to grow. Therefore cut tomato gets spoiled gradually.