Question

a researcher claims that only a portion of the light energy captured by green plants is available for growth and repair. which of the following observations best helps justify the researchers claim? a light - capturing pigment molecules in green plants absorb red, blue, and violet light but reflect green light. b the energy of a photon of light is proportional to its frequency and inversely proportional to its wavelength. c as light energy is converted to chemical energy by metabolic processes, some of the energy is lost as heat. d captured energy is stored in the molecular bonds of organic molecules, including simple sugars and starch.

Explanation:

The researcher claims only a portion of light - energy is captured. Option C best justifies this as it states that during the conversion of light energy to chemical energy by metabolic processes, some energy is lost as heat. This shows that not all the light energy is effectively captured and used, which aligns with the claim. Option A is about the color of light absorbed and reflected by pigments, Option B is about the relationship between photon energy, frequency, and wavelength, and Option D is about where the captured energy is stored, none of which directly address the claim about only a portion of light energy being captured.

Answer:

C. As light energy is converted to chemical energy by metabolic processes, some of the energy is lost as heat.