AP BIOLOGY

Detailed explanation-1: -The correct answer option is (C). 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.

Detailed explanation-2: -This is because pigments absorb the colours of the wavelengths that they do not reflect. Therefore, since this plant reflects reddish-yellow wavelengths, it will only use the blue and violet part of the visible spectrum.

Detailed explanation-3: -As shown in detail in the absorption spectra, chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum. Green light is not absorbed but reflected, making the plant appear green.

Detailed explanation-4: -Absorption spectra can be depicted by wavelength (nm) on the x-axis and the degree of light absorption on the y-axis.

Detailed explanation-5: -Chlorophyll a absorbs violet and orange light the most. Chlorophyll b absorbs mostly blue and yellow light. They both also absorb light of other wavelengths with less intensity.