Question

4. Imagine the discovery of a new desert plant that has a unique pigment in its leaves. This pigment

strongly absorbs all sunlight from green light (wavelength = 500 nanometers) to red light (700
nanometers). If you observed this plant in the desert, what color would the leaves appear to be? Why?

Answer 1

Answer:option

Explanatnion

When visible light rays fall on the leaves of a plant, some of the wavelengths get absorbed by the unique photosynthetic pigment present in the plant and some of the wavelengths will get reflected by the surface. These reflected wavelengths of light give the leaves their color. The reflected light reaches the retina of the eye and generates the perception of color. If a leaf is red/violet in color, it means that it reflects only the red/violet wavelengths and absorbs every other wavelength of the visible light spectrum. Consequently, option (C), containing the combination of green and yellow wavelengths, will be the only option that has the wavelengths that will get absorbed by the photosynthetic pigment. Hence, option (C) is the correct one.