Spor, or spore, is a reproductive unit in certain organisms, including fungi, plants, and bacteria. It is typically a single cell that can develop into a new individual under suitable conditions. Spores are often resistant to harsh environmental conditions, allowing them to survive in unfavorable situations until they find a suitable habitat to grow. In the life cycle of mushrooms, for example, spores are released from the fruiting body and can be dispersed by wind or water. When they land in a conducive environment, they germinate and develop into new fungal structures. This process is essential for the reproduction and spread of many species.