Question

complete the sentences about the absorption spectrum.

1. a green pigment likely (click to select) green light.
2. chlorophyll (click to select) red and blue wavelengths of light best.
3. a 430nm pigment likely absorbs (click to select) light.
4. carotenoids absorb light in the blue and (click to select) region of the spectrum.

Explanation:

1. A green pigment appears green because it reflects green light rather than absorbing it.
2. Chlorophyll absorbs red and blue - light wavelengths most efficiently for photosynthesis, as shown in the absorption spectrum.
3. A 430nm wavelength corresponds to blue - violet light, so a 430nm pigment likely absorbs blue - violet light.
4. Carotenoids absorb light in the blue and blue - green region of the spectrum, which helps them assist in photosynthesis and protect plant cells.

Answer:

1. reflects
2. absorbs
3. blue - violet
4. blue - green