Wavelength of light that is mainly absorbed by the plants?

Explanation

The correct answer is red light, which is highly absorbed by chlorophyll in plants and plays a vital role in photosynthesis, especially in photosystem II. In contrast, orange light is absorbed but contributes less effectively to the photosynthetic process. Green light is primarily reflected, not absorbed, making it less useful for photosynthesis. Therefore, the most effective wavelength of light for photosynthesis is red.