One of the following processes is not a step involved in the water cycle operating in nature :

Question

Accepted Answer

The water cycle, also known as the hydrological cycle, is a continuous process by which water moves through the Earth's atmosphere, surface, and underground. It involves several key processes that facilitate the movement and transformation of water in different states. Let's examine each option to understand why Option 4, Photosynthesis, is not a step involved in the water cycle:

1. **Evaporation**: This is a crucial process in the water cycle where water from oceans, rivers, lakes, and other bodies of water is converted into water vapor and rises into the atmosphere. It is driven by the heat from the sun and is a fundamental step in the cycle, contributing to the formation of clouds.

2. **Transpiration**: This process involves the release of water vapor from plants and trees into the atmosphere. It is similar to evaporation and plays a significant role in the water cycle by contributing to the moisture in the air, which eventually leads to cloud formation and precipitation.

3. **Precipitation**: This is the process by which water in the form of rain, snow, sleet, or hail falls from the atmosphere to the Earth's surface. It is a critical component of the water cycle, as it returns water to the surface, replenishing bodies of water and providing moisture to the land.

4. **Photosynthesis**: This is a biological process used by plants to convert light energy into chemical energy, using carbon dioxide and water to produce glucose and oxygen. While water is a reactant in photosynthesis, this process is not part of the water cycle. Photosynthesis does not contribute to the movement or transformation of water in the environment as the other processes do. Therefore, it is not considered a step in the water cycle.

In conclusion, Option 4, Photosynthesis, is correctly identified as not being a step involved in the water cycle. The other options—Evaporation, Transpiration, and Precipitation—are integral processes that facilitate the movement and transformation of water within the cycle.