Final answer:
Blue light has higher energy than red light; green leaves absorb both, and since blue light has a shorter wavelength and higher frequency than red light, it contains more energy.
Step-by-step explanation:
Blue light has higher energy than red light, but both forms of light are absorbed by green leaves. This is because blue light has a shorter wavelength and higher frequency compared to red light. Red light exhibits the longest wavelengths and the lowest frequencies within the visible spectrum. When it comes to green light, its frequency is lower than that of blue light, and its wavelength is longer than the wavelength of blue light (choices b, c, and e are incorrect as per the provided information). As a result, plants typically absorb more blue and red light for photosynthesis, which is why leaves are green—they reflect green light. Eq. 13.1 illustrates that photon energy is inversely proportional to the wavelength of light, addressing why blue light photons have higher energy than red photons.