What can be inferred about plant growth from the two sets of bean plants in different light conditions?

The inference that white light produces faster growth can be attributed to the understanding of how light influences photosynthesis in plants. White light encompasses the full spectrum of visible light, which includes all colors that can be absorbed by chlorophyll in plants. This absorption is critical for photosynthesis—the process by which plants convert light energy into chemical energy for growth.

In contrast, green light is mostly reflected by plants, meaning it is less effective for driving photosynthesis. Therefore, plants exposed to white light are likely to receive more usable energy, which can lead to more robust growth and faster development compared to those under green light or in conditions with inadequate light.

This knowledge of light spectra explains why plants in natural sunlight (which is predominantly white light) typically exhibit optimal growth. Observations from experiments often support this idea, confirming that when bean plants are grown under white light, they tend to grow taller and healthier than those exposed to light that does not provide a full spectrum.