Describe how the test variable you chose affected the growth of your beans.
The test variable I chose to study its effect on the growth of beans was the amount of sunlight exposure. I conducted an experiment where I placed three groups of bean plants under different sunlight conditions: one group placed in a spot with full sunlight exposure, another group placed in partial shade, and a third group placed in complete shade.
The group of bean plants exposed to full sunlight experienced the most robust growth. They grew taller, developed more leaves, and their stems appeared thicker and stronger compared to the other two groups. This was expected as sunlight is essential for photosynthesis, the process through which plants convert light energy into chemical energy, enabling them to produce glucose and other nutrients necessary for growth.
On the other hand, the group of bean plants placed in partial shade showed average growth. Their height was shorter, the number of leaves was fewer, and the stems were thinner compared to the full sunlight group. Although they had some access to light, it was not sufficient for optimal growth and development.
Lastly, the group of bean plants placed in complete shade experienced the least growth. They were visibly weak, pale, and significantly shorter compared to the other two groups. Without sunlight, these plants were unable to produce enough nutrients through photosynthesis, resulting in stunted growth.
From this experiment, it is evident that the amount of sunlight exposure significantly affects the growth of bean plants. While full sunlight leads to healthy and robust growth, partial shade results in average growth, and complete shade inhibits growth. These findings highlight the importance of providing adequate sunlight to plants for successful cultivation and healthy development.