Final answer:
The green eye, or more accurately, the green-sensitive cone cells in the retina, function to detect and respond to light of medium wavelengths.
Step-by-step explanation:
The correct answer is (a) fixating light. The green eye, or more accurately, the green-sensitive cone cells in the retina, function to detect and respond to light of medium wavelengths. These cone cells are responsible for our perception of the color green. They absorb light at the green end of the visible light spectrum, allowing us to see various shades of green.
For example, when white light shines on a yellow paper, the paper appears yellow because it reflects yellow wavelengths and absorbs other colors. If yellow light shines on a white paper, it appears yellow because white paper reflects all colors and only yellow light is present in this scenario. When red and green lights shine on a white paper, the paper still appears yellow because red and green light mix to create yellow in our perception.
The wavelengths and frequencies of light determine its color; green light has a longer wavelength and lower frequency than blue light. Green light's interaction with plants is essential, as plants commonly reflect green light rather than absorbing it, which is why they appear green. A plant grown under green light may not bend due to the direction of light but might grow differently compared to being grown in darkness.
In essence, an understanding of light detection and color vision is essential for comprehending the biological processes involved in how we perceive the world around us.