What happens to many molds when they are exposed to light?

When molds are exposed to light, many species are triggered to begin the process of disseminating their spores. This response can be part of their reproductive cycle, where the presence of light often signals favorable conditions for dispersal and colonization. Light can serve as a cue for molds to propagate, allowing them to spread more effectively in their environment.

Dissemination of spores is crucial for the lifecycle of molds, as it enables them to colonize new areas and ensures the continuation of their species. This mechanism is part of their adaptation to various environmental conditions, including light exposure, which can indicate seasonal changes that affect their growth and spread.

In contrast, the other options do not accurately reflect the common responses of molds when subjected to light. For instance, molds generally do not grow larger simply from light exposure, nor do they necessarily change color or produce more moisture as a direct response. Understanding these biological responses helps in managing mold growth and assessing their impact on indoor environments.