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In human eye various type of photorecept...

In human eye various type of photoreceptor cells are present like rods and cones. Choose the correct statement responsible for production of white light sensation ?

A

It is the result of equally stimulation of rods & cones.

B

It is the result of alternate stimulation of rods & cones.

C

It is equal stimulation of all three types of cone cells.

D

It is equally produced by stimulation of only red and blue cones.

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The correct Answer is:
To answer the question regarding which statement is responsible for the production of white light sensation in the human eye, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Types of Photoreceptor Cells**: The human eye contains two main types of photoreceptor cells: rods and cones. Rods are responsible for vision in low light and do not detect color, while cones are responsible for color vision and function best in bright light. 2. **Identify the Function of Cones**: Cones are further divided into three types based on the wavelengths of light they absorb: - S-cones (short wavelength, blue light) - M-cones (medium wavelength, green light) - L-cones (long wavelength, red light) 3. **Recognize the Color Mixing Principle**: The sensation of white light is produced when all three types of cones (S, M, and L) are stimulated equally. This is based on the principle of additive color mixing, where combining red, green, and blue light in equal intensities results in white light. 4. **Evaluate the Statements**: - The first statement suggests that white light sensation is a result of equally stimulated rods and cones. This is incorrect because rods do not contribute to color perception. - The second statement mentions alternative stimulation of rods and cones, which is also incorrect for the same reason. - The third statement claims that white light sensation is produced by equal stimulation of all three types of cone cells (S, M, and L). This is correct. - The fourth statement suggests that white light is produced by stimulation of only red and blue cones, which is incorrect as it does not include green. 5. **Conclude the Correct Statement**: Based on the evaluation, the correct statement responsible for the production of white light sensation is that it results from the equal stimulation of all three types of cone cells. ### Final Answer: The correct statement responsible for the production of white light sensation is: "It is a result of equal stimulation of all three types of cone cells." ---
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