are receptor cells contained in the retina and are useful in color perception, particularly in bright light conditions.

Question

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The question asks to fill in the blank: 'are receptor cells contained in the retina and are useful in color perception, particularly in bright light conditions.'
Option analysis:
- 空白1: This is not an actual term describing retinal receptor cells. It appears to be a placeholder or blank label rather than the specific word needed. Therefore, this option does not supply the correct noun to complete the sentence.
- Conceptual understanding: In the retina, there are two main types of photoreceptor cells with distinct roles. Rods are highly sensitive to light and enable vision in dim conditions but do not detect color. Cones, on the other hand, are responsible for color vision and function best in bright light. When the sentence mentions color perception and bright light conditions, the correct term is 'cones.'
- Misconceptions to avoid: If one claimed 'rods' as the answer, that would be incorrect because rods are not involved in color vision and are more active in low illumination. If one claimed 'photoreceptors' in general, it is a broad term that includes both rods and cones, but the clue about color perception in bright light specifically points to cones.
- Putting it together: Since the sentence requires a noun that specifically denotes the color-detecting, bright-light functioning receptors in the retina, the intended completion is 'cones.' The provided option '空白1' does not convey that term, so the option as given cannot be the correct completion.
- Summary implication: The correct fill-in should reference cones, aligning with how color vision relies on cone photoreceptors and how they operate under bright illumination, unlike rods which are for low-light, grayscale perception.

are receptor cells contained in the retina and are useful in color perception, particularly in bright light conditions.

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Question at position 13 Which of the followings statements is true of the rods in the eye's retina?They are insensitive to light.They are very useful for color vision.They are found in the fovea.They require a smaller amount of light to respond than the cones do.

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