Light is a key reactant of photosynthesis. Though white light appears colorless, it actually contains wavelengths of the full visible spectrum. When white light hits surfaces, some of the light is absorbed and the rest is reflected.

Propose why a red object would appear red.

(CFS: Write in complete sentences.)

A particular organisms’ leaves are made of an unknown pigment molecule. The absorption spectrum of the pigment is seen in the diagram.

The leaves of this organism appear blue. Provide evidence from the graph that can be used to explain why the leaves appear that color. Propose the wavelengths of light that would be present in high concentrations in its ideal environment. Provide rationale for your response.